CBSE Class 7 Answered

In order to find the complementary pair of angles, add the angles to get 90^o. And to find the supplementary pair, the angle sum should amount to 180^o.

(a) 68^o, 112^o

Sum = 68^o + 112^o = 180^o

Thus, it is a supplementary pair of angles.

(b) 55^o, 35^o

Sum = 55^o + 35^o = 90^o

Thus, it is a complementary pair of angles.

(c) 79^o, 101^o

Sum = 79^o + 101^o = 180^o

Thus, it is a sumpplementary pair of angles.

(d) 64^o, 26^o

Sum = 64^o + 26^o = 90^o

Thus, it is a complementary pair of angles.