Question

An angle equal to its supplement is _____ degree.

Answer 1

90

Explanation:

Let the required angle be x°

Therefore, it's supplement = (180-x)°

Now, x = 180-x

= x+x = 180

= 2x = 180°

Therefore x\ =\ \frac{180°}{2}\ =\ 90°x = 2180° = 90°

Answer 2

90 Degrees.

The angle which is equal to its supplement is 90 degrees.