Answer. A pair of complementary angles is (b) 30 + 45 (a) 2 How many rays can be drawn from a given point? Question 2. sometimes. (a) x = 50° Intersecting lines form linear pair of angles. (a) An obtuse angle Sum of two angles is 90°. Can two right angles forms a linear pair ? Can two right angles form a linear pair? Solution: No, two acute angles cannot form a pair of supplementary angles. (b) 180° Sum of supplementary angles is 180°. (a) 45° (d) 45°, Question 3. Question 22. D. If two vertical angles are acute, their supplements are obtuse, congruent angles. (a) 5° In the given value of x is : (a) 90° A. right angles B. acute angles C. obtuse angles D. complementary angles See answer Brainly User Brainly User C hope this helps you alot ... i think it was b JeriD15 JeriD15 Your best option would be B, If two angles form a linear pair, then they are both right angles thanks but i was already took the test New questions in Mathematics. (v) Can two obtuse angles be adjacent? Two lines are parallel if alternating angles are equal. ... if two angles form a linear pair, then the two angles are supplementary. (c) x = 105° (d) none of these. In the given figure, if l || m then the value of x is (b) x = 35 However, just because two angles are supplementary does not mean they form a linear pair. If two lines are parallel then corresponding angles are equal. (d) None of these. The measure of one angle is 8 times the measure of the other angle. (b) 55° (c) 135° (i) If two angles are complementary, then the sum of their measures is ……….. (a) 65°, 115° In the given figure, PA || BC || DQ and AB || DC. 5.2.4 Linear Pair A linear pair is a pair of adjacent angles whose non-common sides are opposite rays. (vi) 30° is one-half of its complement. (b) x = 60 State whether the following statements are true (T) or false (F): Step-by-step explanation: When two lines intersect, a linear pair is formed, two angles being linear pair means the sum of those two angles is 180°. (ii) ∠AOC and ∠COB are ……….. angles. (b) 95° (b) Two obtuse angles can form a linear pair (c) Two right angles can form a linear pair (d) One obtuse angle and one acute angle cannot form a linear pair. (a) 65° (d) 90°, Question 23. (d) a ray, Question 32. Name two acute adjacent angles. (b) (a, b) and (c, d) The two axioms mentioned above form the Linear Pair Axioms and are very helpful in solving various mathematical problems. If ED AC , what conclusions can be reached in one or more steps? Find the complement of each of the following angles: Solution: Question 3. Hence, one angle has to be acute and other angle obtuse if there sum is 180 degrees. (c) 175° 3. (b) Triples With the help of given figure, Answer the following questions: Answer: \(\angle 3\), \(\angle 4\), \(\angle 5\), \(\angle 6\), Answer: \(\angle 1\), \(\angle 2\), \(\angle 7\), \(\angle 8\), Question 3. 2. (b) 30° State the property that is used in each of the following statements: Question 2. (a) Two acute angles can form a linear pair. Observe the figure and fill in the following blanks: (c) 15° Adjacent angles that do not form a linear pair mean, angles have common ray but the angles in a linear pair are not supplementary. (d) 27°, 53° E. The last statement of a proof should be the statement of what you are trying to prove. In the diagram below, ∠ABC and ∠DBE are supplementary since 30°+150°=180°, but they do not form a linear pair since they are not adjacent. (c) 120° If two angles are supplementary then the sum of their measures is __________. (d) Cannot be said, Question 7. As sum of two angles is neither 90° nor 180°. (d) 80°, 10°, Question 11. (c) (a, c) and Name two obtuse vertical angles. (ix) If two lines intersect and if one pair of vertically opposite angles are acute angles, then the other pair of vertically opposite angles are …….. 104. Answer: (a) 55° (d) None of these. Question 6. (c) 35° Solution: Question 11. (b) Two obtuse angles can form a linear pair (c) Two right angles can form a linear pair (d) One obtuse angle and one acute angle cannot form a linear pair. Solution: No, two acute angles cannot form a linear pair because their sum is always less than 180 o. (vii) Adjacent angles have a common vertex, a common ……….. and no common ……… Complementary pair of angles : 3 is a right angle II. (a) 45° Clear all the fundamentals and prepare thoroughly for the exam taking help from Class 7 Maths Chapter 5 Lines and Angles Objective Questions. 3. 14. (a) x = 50 (a) Two acute angles can form a linear pair. Find the measure of each angle. (c) 3 (iv) Can two adjacent angles be supplementary? an angle with measure greater than 90 and less than 180. definition of right angle. 25. Answer: (d) None of these What is the measure of the complement of 65°? (a) (a, d) (d) Bisectors of the adjacent angles forming a linear pair form a right angle. (a) 50°, 120° Question 4. Example. (b) obtuse (b) 15° Are two alternate angles equal if a transversal intersects two parallel lines ? (a) 35° Can two obtuse angles be adjacent angles? Question 6. Are two alternate angles equal if a transversal intersects two parallel lines ? (v) Pair of vertically opposite angles are always supplementary. (d) 50° 19. The sum of the measures of two angles is 90°, the angles are called ………….. angles. (b) l ≠ m Sum of complementary angles is 90°. What happens to the measurement of an angle after the extension of its arms? If in the given figure \( l \parallel m \) then : Students can access the NCERT MCQ Questions for Class 7 Maths Chapter 5 Lines and Angles Pdf free download aids in your exam preparation and you can get a good hold of the chapter. (c) right (d) 30°, Question 28. (a) 20° (iv) Two angles forming a linear pair are ………. (a) 130°, 50° A reflex angle is called an angle which is greater than 180 degrees but less than 360 degrees. I. (c) 63°, 27° Can two acute angles form a linear pair? (d) A reflex angle, Question 20. Two lines intersect and the vertically opposite angles so formed are ………………. (Why?) (d) None of these. A supplementary angle is either one of a pair of angles which, together, add up to exactly 180 degrees. Name two obtuse vertical angles. Answer. Calculate the measure of each lettered angle in the following figures (parallel line segments / rays are denoted by thick matching arrows): (a) \( l \parallel m \) (c) x = 30 (vi) 30° is one-half of its complement. Solution: Choose the correct answer from the given four options (4 to 14): Answer: (b) (a, b) and (c, d) Question 4. A. one angle is acute and the other angle is obtuse B. they are both right angles C. they are both acute angles D. they are both obtuse angles Please select the best answer from the choices provided (a) 45° Measure of the supplement of 55° : Sum of linear pair is 180°. (c) 60°, 120° Moreover, if there is one common line for two angles, then it is known as “angle pairs”. Complementary to 0° angle is : Question 3. (d) 95°, Question 9. Question 4. (c) 65° Give reason in support of your answer. Can two adjacent angles be complementary? (b) Intersecting lines (b) 75° (b) 50° Ans : (d) Bisectors of the adjacent angles forming a linear pair form a right angle. (iii) ∠AOC is ………… of ∠COD. The other two pairs of angles are adjacent but they do not form a linear pair. The measure of one angle is 15 less than half the measurement of its supplement. Question 10. Question 29. (b) If one of the angles is obtuse, then other angle of a linear pair is acute. One acute and one obtuse angle can be supplementary. (a) Doubles Question 3. (a) 70+ 20 (c) 80° A line that intersects two or more lines at distinct points is called Answer: (c) 80° a. Are ∠1, ∠2 a linear pair? Which instrument is used to measure or construct angles? Solution: Let x be the required angle. The sum of all angles around a point is 24. If an angle is one-third of its supplement, then the measure of the angle is Question 85. Question 1. (xii) Corresponding angles are on the ……….. side of the transversal. Hence, ∠ x and ∠ y forms a linear pair Name a linear pair. (c) 25°, 75° Question 5. (d) 4 Then the values of x and y are respectively: Answer: (a) x = 60° Answer: (a) \( l \parallel m \) CBSE Maths notes, CBSE physics notes, CBSE chemistry notes. Can an acute angle be adjacent to an obtuse angle? (d) None of these. Question 31. Answer. Since the non-adjacent sides of a linear pair form a line, a linear pair of angles is always supplementary. Answer: true. The pairs of angles are nothing but the two angles. (c) A right angle Two angles are said to be linear if they are adjacent angles formed by two intersecting lines. A pair of supplementary angles is (v) If two adjacent angles are supplementary, then they form a ……….. Linear pair is a pair ofadjacent angleswhere non-common side forms a straight lineSo, In a linear pair, there are two angles who haveCommon vertexCommon sideNon-common side makes a straight line or Sum of angles is 180°Linear pairLinear pair is a pair of adjacent angles where non-common side forms a Solution: Question 10. We believe the knowledge shared regarding NCERT MCQ Questions for Class 7 Maths Chapter 5 Lines and Angles with Answers Pdf free download has been useful to the possible extent. (i) Fig 5.11 (ii) Indicate vertically opposite angles : Answer: (a) 20° (c) Corresponding angles The measure of a straight angle is 180 degrees, so a linear pair of angles must add up to 180 degrees. The sum of the measures of the angles in a linear pair is (a) 90° (b) 180° (c) 112°, 68° ... Two angles whose degree measures sum to 180 form a linear pair. (a) x = 75° Supplementary angles are linear pairs. For #1-6, use the figure at the right. (b) 50° MCQ Questions for Class 7 Maths with Answers, NCERT Solutions for Class 12 Hindi Vitan Chapter 4 डायरी के पन्ने, NCERT Solutions for Class 12 Hindi Vitan Chapter 3 अतीत में दबे पाँव, NCERT Solutions for Class 12 Hindi Vitan Chapter 2 जूझ, NCERT Solutions for Class 12 Hindi Vitan Chapter 1 सिल्वर वैडिंग, NCERT Solutions for Class 12 Hindi Aroh Chapter 18 श्रम-विभाजन और जाति-प्रथा, मेरी कल्पना का आदर्श समाज, NCERT Solutions for Class 12 Hindi Aroh Chapter 17 शिरीष के फूल, NCERT Solutions for Class 12 Hindi Aroh Chapter 16 नमक, NCERT Solutions for Class 12 Hindi Aroh Chapter 15 चार्ली चैप्लिन यानी हम सब, NCERT Solutions for Class 12 Hindi Aroh Chapter 14 पहलवान की ढोलक, NCERT Solutions for Class 12 Hindi Aroh Chapter 13 काले मेघा पानी दे, NCERT Solutions for Class 12 Hindi Aroh Chapter 12 बाज़ार दर्शन. If two lines are parallel then sum of interior opposite angles is 180°. Solution: Kerala Syllabus 9th Standard Physics Solutions Guide, Kerala Syllabus 9th Standard Biology Solutions Guide, ML Aggarwal Class 7 Solutions for ICSE Maths, NCERT Solutions for Class 6 Sanskrit Ruchira Bhag 1, NCERT Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes InText Questions, NCERT Solutions for Class 7 Maths Chapter 14 Symmetry InText Questions, NCERT Solutions for Class 7 Maths Chapter 13 Exponents and Powers InText Questions, NCERT Solutions for Class 7 Maths Chapter 12 Algebraic Expressions InText Questions, NCERT Solutions for Class 7 Maths Chapter 11 Perimeter and Area InText Questions, NCERT Solutions for Class 7 Maths Chapter 9 Rational Numbers InText Questions, NCERT Solutions for Class 7 Maths Chapter 8 Comparing Quantities InText Questions, NCERT Solutions for Class 7 Maths Chapter 7 Congruence of Triangles InText Questions, NCERT Solutions for Class 7 Maths Chapter 6 The Triangle and its Properties InText Questions, NCERT Solutions for Class 7 Maths Chapter 5 Lines and Angles InText Questions, NCERT Solutions for Class 7 Maths Chapter 4 Simple Equations InText Questions, NCERT Solutions for Class 7 Maths Chapter 3 Data Handling InText Questions, NCERT Solutions for Class 7 Maths Chapter 2 Fractions and Decimals InText Questions, NCERT Solutions for Class 7 Maths Chapter 1 Integers InText Questions. Two angles forming a linear pair are ……………. If two lines are intersected by a transversal, then the number of pairs of interior angles on the same side of transversal is Identify which of the following pairs of angles are complementary. (iii) Two obtuse angles can form a linear pair. An angle is a figure where, from a common position, two rays appear. Download All PDF ﬁ les from www.rava.org.in. (b) 25° In the given figure, AB is a straight line and OD ⊥ AB. In the given figure, AB || CD. (d) x = 25 (d) Infinitely many, Question 19. (b) Scale Two angles in a linear pair are adjacent to each other. Fill in the blanks: (b) 90° (b) 75° (180°, 5°) pair of angle is given : (d) 30°, Question 17. What is the measure of the complement of 41°? If two lines intersect at a point, then the vertically opposite angles are always ________ . Two Adjacent Angle Can Be Complementary Too If They Add Up To 90°. (c) x = 70 (a) 0° Can two acute angles form a pair of supplementary angles? When the intersecting lines are perpendicular, each linear pair will be right angled. Lines AB and CD are intersecting each other. 4. Can 2 Adjacent Angle Be Complementary? The sum of the measures of two angles is 180°, the angles are called ………… angles. (b) 180° (vii) If two lines are cut by a transversal, then each pair of corresponding angles are equal. They 'supplement' each other to make the total equal 180 degrees. (a) 25° 5.2.4 Linear Pair A linear pair is a pair of adjacent angles whose non-common sides are opposite rays. (c) intersecting m 1 = 90 III. If ∠APQ = 50° and ∠PRD = 130°, then ∠QPR is (c) 35° Practicing the MCQ Questions on Lines and Angles Class 7 with answers will boost your confidence thereby helping you score well in the exam. 3. (b) x = 95° In the given figure value of x is : No! If one angle of a linear pair is acute, then the other angle is One acute and one obtuse angle can form a linear pair. Question 25. If an angle measures 10° more than its complement, then the measure of the angle is (b) 30°, 150° (a) Two acute angles can form a linear pair. Complementary to 70° angle is : Solution: Question 7. (a) 45° 7. definition of obtuse angle. These are alternating angles. (b) 55° Yes Are ∠1, ∠2 a linear pair? Pairs of alternate exterior angles, Answer: \(\angle 1\) and \(\angle 8\), \(\angle 2\) and \(\angle 7\), Question 6. Find the value of x in the given figure if lines \( p \parallel q \) : Solution: Question 8. Can two acute angles form a linear pair ? Since when two angles form linear pair they are supplementary, they add up to form 180 degrees. (xiii) Alternate interior angles are on the ………… side of the transversal. Are ∠1, ∠2 a linear pair? (b) 180° Question 5. (viii) If two lines are cut by a transversal, Now if ∠ABC and ∠CBD for a linear pair, ∴∠ABC + ∠CBD = 180° also given that ∠ABC and ∠CBD are of equal measure ∴ ∠ABC + … Answer: false. Measure of the supplement of 0° : (d) None of these. (iv) Two adjacent angles always form a linear pair. (c) 0 + 95 (c) 75° (b) x = 60° (c) 65° Solution: Question 2. If the sum of two adjacent angles is 180∘ 180 ∘, then they are called a linear pair of angles. Answer: (d) Explanation : Question 12. (b) 50°, 130° Sum of supplementary angles is 180°. Question 33. Which of the following pairs of angles form a linear pair? If two adjacent angles are supplementary, they form a ………………. If two adjacent angles are supplementary, then they form _________ . (iv) Two adjacent angles always form a linear pair. (b) supplementary In the gitsen figure, if l || m then the value of x is Solution: Question 1. (a) acute Explore numerous MCQ Questions of Lines and Angles Class 7 with answers provided with detailed solutions by looking below. (d) 112°, 68°, Question 5. always. If two adjacent angles are supplementary, they form a linear pair; If two lines intersect at a point, then the vertically opposite angles are always equal; If two lines intersect at a point, and if one pair of vertically opposite angles are acute angles, then the other pair of vertically opposite angles are obtuse angles. (iii) Two obtuse angles can form a linear pair. (b) equal Answer: (c) 15° Solution: Question 9. (a) complementary (c) 90° (vi) Angles of a linear pair are as well as ……….. (c) 75° (a) Perpendicular lines https://www.answers.com/Q/Can_two_obtuse_angles_form_a_linear_pair (iii) Supplement of an obtuse angle is ………. (a) 90° then each pair of alternate interior angles are equal. Adjacent angles have a common …………… and a common …………………, 4. (a) 45°, 45° Name a linear pair. then each pair of corresponding angles are equal. (d) None of these, Question 26. (c) None of these. State whether the given statements are true or false: Question 1. Students are advised to solve the Lines and Angles Multiple Choice Questions of Class 7 Maths to know different concepts. So, x + 65 o = 180 o. x = 180 o – 65 o. x = 115 o (d) None of these. ) ( a ) two obtuse angles form a line 45°, Question 34 detailed solutions by looking.! Then _____ this point and its arms to measure or construct angles other to make the total 180! Right, then each pair of corresponding angles are always supplementary lines and angles Class with... 95° ( c ) 80° sum of two angles plane and do not a... If the supplement of an obtuse angle 180° > 90° that 's why it ca.! ) 95° ( c ) if two angles in a line but do! Page No of interior opposite angles are supplementary ) 10° ( d ) Infinitely many, 7... Parallel then sum of two angles are equal one angle is 24 more than the measure one. Students can download the lines which lie on the ………… side of the other two pairs of angles form linear! With Answers during preparation and score maximum marks in the following statements: two angles is 180∘ 180 ∘ then! Vertical angles are supplementary does not mean they form a linear pair ( )! ∠Aoc and ∠ BOC form a linear pair they are supplementary ) equal ( )... 120° ( d ) Infinitely many, Question 34 Compasses ( b ) 95° ( )... Confidence thereby helping you score well in the given figure, PA || BC || DQ and ||! Than half the measurement of its supplement 180 ∘, then _____ >... ( v ) pair of adjacent angles formed by two intersecting lines are perpendicular, each pair! Of angles are complementary 45°, Question 3 not be said, Question.... The statement of a proof should be the statement of a straight angle is 65,! Of its complement ) 10° ( d ) can not be said, Question 24 are always ________ angle... Two acute angles can form a linear pair, then find its complement other obtuse such. Lines ( c ) 49° ( d ) Infinitely many, Question.... Whose measurement is exactly equal to its complement pair axioms and are supplementary or! Moreover, if there is one common ………… ( xii ) corresponding angles are equal and are helpful. The angle, which is equal to its complement the transversal common position, two acute angles can not a. Than 360 degrees various mathematical problems OD ⊥ AB are adjacent and are supplementary, they add up 180... Find the angle is greater than the measure of one angle is greater than the measure of a straight and... Page No two right angles form linear pair of vertically opposite angles so formed are ……………… AB... And ∠EOD, ∠COD Page No ) 125° sum of linear pair is a straight angle is 24 more the... || DQ and AB || DC 50° these are alternating angles 180° sum of the other.! ∠Eod and ∠EOD, ∠COD Page No angles must add up to form 180,... || DQ and AB || DC Answers from here and test their skills! Side of the measures of two angles forming a linear pair are acute, their supplements are obtuse, angles! 20° sum of their measures is __________ half the measurement of its complement add up form! The complement of 65° Maths to know different concepts the transversal are supplementary 10° d. A common …………… and a common …………………, 4 angles always form a linear at! Arms form a line segment AB ∠ BOC form a linear pair, then its. Measurement is exactly equal to its complement intersect at any point called ) 15° ( c ) 8 d! Corresponding angles are supplementary then the two axioms mentioned above form the linear pair is a pair corresponding! Xi ) alternate interior angles are equal same plane and do not form a linear pair, then they a! Figure, PA || BC || DQ and AB || DC its.... 180 degrees but less than 180. definition of right angle: solution: No, two rays forming the.. Reflex angle is: ( a ) 135° ( b ) Scale ( ). ( b ) can two obtuse angles form a linear pair sum of two angles is 90°, the are. 15° sum of complementary angles is 90° when the intersecting lines are then. False: Question 1 Questions of lines and angles Objective Questions ∘, then other angle obtuse there! 5° ( b ) 25° ( c ) 49° ( d ) 45° ( b 180°! ( c ) 35° ( d ) 45° ( b ) 125° of! Angles: solution can two obtuse angles form a linear pair Choose the correct answer from the given four options ( to. Make the total equal 180 degrees Collinear lines, Question 3 of angles..., they add up to 180 form a linear pair of angles form a linear pair a pair... Adjacent but they do not form a linear pair axioms and are very helpful in solving various problems!... if two angles form a linear pair maximum marks in the exam by a transversal two... ( vi ) 30°, 150° if sum of two angles in a linear pair during and! Maths notes, CBSE chemistry notes but less than 180. definition of right angle the.

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