Question

find the angle which is equal to its supplement ​

Answer 1

Supplement
Let the angle be x
x+x=180
2x=180
x=180/2
x=90°
Complement
Let the angle be x
x+x=90
2x=90
x=90/2
x=45°

HOPE IT HELPS...!!

Answer 2

Answer:

let the angle be x

supplementary angle= (180-x)

so,

x=180-x

2x=180

x=90

90° is answer.

hope this helps you ☺️