(iii) ∠EOB and ∠EOD are equal supplementary angles. (ii) ∠AOB and ∠AOE are adjacent complementary angles. (i) ∠BOC and ∠AOD are obtuse vertically opposite angles. (v) Adjacent angles but do not form a linear pair. In the given figure, name the following pairs of angles. (vi) 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 _. (v) If two lines intersect at a point, then the vertically opposite angles are always _. (iv) If two adjacent angles are supplementary, they form a _. (iii) Two angles forming a linear pair are _. (ii) If two angles are supplementary, then the sum of their measures is _. (i) If two angles are complementary, then the sum of their measures is _. (ii) 25° + x + 40° = 180° (Sum of adjacent angles on straight line) In the following figure, is ∠1 adjacent to ∠2? Give reasons.įind the values of the angles x, y and z in each of the following: (i) Vertically opposite angles are ∠1 and ∠4, ∠5 and (∠2 + ∠3) (vi) Vertically opposite angle of ∠5 is ∠2 + ∠3 i.e. (v) Yes, ∠1 is vertically opposite to ∠4. (iv) Yes, ∠BOD and ∠DOA are supplementary. (iii) Yes, ∠COE and ∠EOD form a linear pair of angles. (vi) What is the vertically opposite angle of ∠5? (v) Is ∠1 vertically opposite angle to ∠4? (iii) Do ∠COE and ∠EOD form a linear pair? Thus the required angle is less than 45°. Is its complementary angle greater than 45° or equal to 45° or less than 45 °? Thus, two right angles are supplementary angles.Īn angle is greater than 45°. Thus, the two obtuse angles cannot be supplementary angles. ∴ Obtuse angle + obtuse angle > 90° + 90° > 180° If ∠1 is decreased by some degrees, then ∠2 will also be increased by the same degree so that the two angles still remain supplementary.Ĭan two angles be supplementary if both of them are: If ∠1 is decreased, what changes should take place in∠2 so that both the angles still remain supplementary. In the given figure, ∠1 and ∠2 are supplementary angles. Identify which of the following pairs of angles are complementary and which are supplementary?įind the angle which equal to its complement.įind the angle which is equal to its supplement. (iii) Complement of 57° = 90° – 57° = 33°įind the supplement of each of the following angles: NCERT Solutions for Class 7 Maths Chapter 5 Lines and Angles Exercise 5.1įind the complement of each of the following angles: Class 7 Maths Lines and Angles Exercise 5.2.Class 7 Maths Lines and Angles Exercise 5.1.NCERT Solutions for Class 7 Maths Chapter 5 Lines and Angles Ex 5.1 Lakhmir Singh Science Class 8 Solutions.PS Verma and VK Agarwal Biology Class 9 Solutions.NCERT Solutions for Class 9 Foundation of IT.NCERT Solutions for Class 9 Social Science.NCERT Solutions for Class 10 Foundation of Information Technology.
SUPPLEMENTARY ANGLE PAIRS PDF
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