Find the angle which is equal to its supplement.
Let the angle be x.
Supplement of this angle is also x.
The sum of the measures of a supplementary angle pair is 180º.
∴ x + x = 180°
2x = 180°
x = 90°
Question 5 Find the angle which is equal to its supplement:
Find the measure of an angle which is
(i) equal to its complement,
(ii) equal to its supplement.
One angle is 110o, its supplement angle is equal to