(b) Scale (c) 85° One acute and one obtuse angle can form a linear pair. (b) 180° Solution: Question 5. (vii) If two lines are cut by a transversal, then each pair of corresponding angles are equal. Two lines intersect and the vertically opposite angles so formed are ………………. (a) 35° then each pair of corresponding angles are equal. (iv) Two adjacent angles always form a linear pair. Answer. Question 4. In the given figure, if l || m then the value of x is Answer: No two obtuse angles cannot form a linear pair as their sum will exceed , but the sum of angles in linear pair is . 3. Can an acute angle be adjacent to an obtuse angle? Question 14. (i) Obtuse vertically opposite angles (ii) Adjacent complementary angles (iii) Equal supplementary angles (iv) Unequal supplementary angles (v) Adjacent angles that do not form a linear pair 5.3 PAIRS OF LINES 5.3.1 Intersecting Lines LINES AND ANGLES In the Fig 5.22, p is a transversal to the lines l and m. Can two adjacent angles be complementary? Find the angle, which is equal to its supplement. They 'supplement' each other to make the total equal 180 degrees. 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. (c) right If the sum of two adjacent angles is 180∘ 180 ∘, then they are called a linear pair of angles. (d) 50° (b) 90° Two Adjacent Angle Can Be Complementary Too If They Add Up To 90°. (b) 47°, 133° 108. 3. (a) 25° Question 2. (b) obtuse An angle is a figure where, from a common position, two rays appear. (v) Can two obtuse angles be adjacent? (d) 60°, 130° Since when two angles form linear pair they are supplementary, they add up to form 180 degrees. None of these, as sum of complementary angles is 90°. Now if ∠ABC and ∠CBD for a linear pair, ∴∠ABC + ∠CBD = 180° also given that ∠ABC and ∠CBD are of equal measure ∴ ∠ABC + … (a) 45° 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. Name a linear pair. Complementary to 95° angle is : Which instrument is used to measure or construct angles? Question 3. vertical angles are congruent. Students are advised to solve the Lines and Angles Multiple Choice Questions of Class 7 Maths to know different concepts. (a) Doubles Two angles forming a linear pair are ……………. (c) 35° Answer: true. If ED AC , what conclusions can be reached in one or more steps? Hence, ∠ x and ∠ y forms a linear pair (i) Fig 5.11 (ii) (d) 90°, Question 23. (c) 25°, 75° (c) No relation. State whether the following statements are true (T) or false (F): Name two acute vertical angles. Answer: (d) None of these (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 …….. of ∠EOA. Two angles form a linear pair. Complementary pair of angles : (a) 1 (d) None of these. What do we call an angle whose measurement is exactly equal to 0°? 3. 3 is a right angle II. (a) x = 75° (a) 45° The sum of the measures of two angles is 180°, the angles are called ………… angles. (i) Fig 5.11 (ii) (b) 30° Can two right angles form a linear pair? Sum of complementary angles is 90°. (c) 65° (c) Remains the same Solution: Question 14. Question 1. (b) 0° (xi) Alternate interior angles have one common ………… 4. Find the angle, which is equal to its complement. (a) x = 50° Answer: (d) Explanation : (c) 45° – 145° (iii) ∠AOC is ………… of ∠COD. 1. (a) 2 5.2.4 Linear Pair A linear pair is a pair of adjacent angles whose non-common sides are opposite rays. The sum of the measures of two angles is 90°, the angles are called ………….. angles. (b) 15° If an angle measures 10° more than its complement, then the measure of the angle is 19. How many rays can be drawn from a given point? The measure of an angle is three times the measurement of its complement. (a) 70+ 20 (v) If two adjacent angles are supplementary, then they form a ……….. Name two acute vertical angles. Solution: No, two acute angles cannot form a pair of supplementary angles. (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 pair of supplementary angles is (d) None of these. (c) (a, c) and (a) 45° Linear pairs of angles are adjacent and are supplementary, that's they add upto 180°. 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. (b) 75° (viii) If two lines are cut by a transversal, (c) 49° (ii) ∠AOC and ∠COB are ……….. angles. (c) 8 Question 22. (b) x = 35 (b) transversal 5.2.4 Linear Pair A linear pair is a pair of adjacent angles whose non-common sides are opposite rays. an angle with measure greater than 90 and less than 180. definition of right angle. Answer: (b) 180° Can two obtuse angles be adjacent angles? What is the measure of the complement of 41°? Answer: (b) 125° Question 5. (vi) 30° is one-half of its complement. In the given figure, AB is a straight line and OD ⊥ AB. (c) x = 105° Then the values of x and y are respectively: (d) None of these. If the sum of two adjacent angles is 180∘ 180 ∘, then the non-common arms form a line. Solution: Question 8. (iii) Two obtuse angles can form a linear pair. A pair of complementary angles is 4. Can two adjacent angles be complementary? (b) 5 Pairs of alternate interior angles, Answer: \(\angle 3\) and \(\angle 6\), \(\angle 4\) and \(\angle 5\), Question 5. Observe the following diagram of a Linear Pair ∠ x and ∠ y are two adjacent angles because: Both are supplementary to each other i.e. as sum of linear pair is 180°, and obtuse angle 180°>90° that's why it can't. Use MCQ Questions for Class 7 Maths with Answers during preparation and score maximum marks in the exam. (b) 25° The pairs of angles are nothing but the two angles. What is the supplement of 105° an angle with measure equal to 90. Answer: (a) x = 60° Answer: (a) 70+ 20 (c) 135° If two adjacent angles are supplementary, they form a ………………. Complementary to 0° angle is : Question 14. (d) 130° If two lines are intersected by a transversal, then the number of pairs of interior angles on the same side of transversal is The measure of one angle is 24 more than the measure of the other angle. Name two acute adjacent angles. Question 85. (ii) Two acute angles can form a linear pair. 25. (c) 80° If in the given figure \( l \parallel m \) then : If in the given figure \(\angle \) x = \(\angle \) y then : Name two obtuse vertical angles. Answer. (d) 80°, 10°, Question 11. (c) 10° Sum of supplementary angles is 180°. What do we call an angle which exactly measures 90°? Two lines are parallel if alternating angles are equal. (d) none of these, Question 30. (d) None of these. (iv) ∠BOE is …………. (a) (a, d) (d) 30°, Question 17. Solution: Question 2. (a) x = 40 (b) 95° (a) 55° (b) 50° Measure of the supplement of 0° : Hence, one angle has to be acute and other angle obtuse if there sum is 180 degrees. then each pair of alternate interior angles are equal. If an angle is one-third of its supplement, then the measure of the angle is (a) Perpendicular lines (c) A right angle Yes Are ∠1, ∠2 a linear pair? Answer: false. Question 16. (c) None of these. Solution: Question 1. Answer: (c) 15° (c) 60°, 120° (c) unequal 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. Solution: Question 2. (d) 45°, Question 3. Vertically opposite angles are equal. 5. Answer: (c) Two right angles can form a linear pair (a) 0° – 90° (c) Corresponding angles (a) 55°, 115° D. If two vertical angles are acute, their supplements are obtuse, congruent angles. Question 8. 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°. What happens to the measurement of an angle after the extension of its arms? (d) x = 25 (a) 50°, 120° vertical angles theorem. (b) 45° (b) If one of the angles is obtuse, then other angle of a linear pair is acute. Solution: Question 13. (c) x = 30 (c) 75° (d) Collinear lines, Question 15. (b) 50° (a) complementary If one angle of a linear pair is acute, then the other angle is (b) x = 60° Example 4: 1 and 2 form a linear pair so m 1 + m 2 = 180° therefore the angles … Question 4. (a) 90° Example. 1. (180°, 5°) pair of angle is given : Calculate the measure of each lettered angle in the following figures (parallel line segments / rays are denoted by thick matching arrows): Which of the following pairs of angles form a linear pair? Answer. The sum of all angles around a point is (Why?) 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. Question 3. Answer: (c) None of these (iv) Can two adjacent angles be supplementary? E. The last statement of a proof should be the statement of what you are trying to prove. Can two obtuse angles be adjacent angles? 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