Question

if the measure of an angle is 20° then the measure of its supplement is
options
a)90°
b)120°
c)140°
d)160°
answer with proper solution​

Answer 1

Answer:

The sum of two supplementary angles is 180°

1st angle = 20°

Assume that the 2nd angle = x

x + 20° = 180°

x = 180° - 20°

x = 160°

Hence the answer is (d) 160°