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SAI International School
Class -7
MATHEMATICS
Ch-5- LINES AND ANGLES
HOME ASSIGNMENT Answer
1. Identify which of the following pairs of angles are complementary and which are
supplementary.
(i) 130º, 50º (ii) 45º, 45º (iii) 80º, 10º-- Complementary- ii , Supplementary- i
2. Find the angle which is equal to its supplement.- 90
3. Can two angles be supplementary if both of them are right?- YES
4. In the given figure:
(i) Is ∠1 adjacent to ∠2?- yes
(ii) Is ∠AOC adjacent to ∠AOE?no
(iii) Do ∠COE and ∠EOD form a linear pair? yes
(iv) Are ∠BOD and ∠DOA supplementary?yes
(v) Is ∠1 vertically opposite to ∠4? yes
(vi) What is the vertically opposite angle of ∠5? Ans - Angle BOC
5. Indicate which pairs of angles are:
(i) Vertically opposite angles. – 1,4
(ii) Linear pairs. 4,5