Question

Find the angles which is equal to its supplement.

Answer 1

Find the angle equal to its supplement

Let the required angle be $a°$.

We know that supplementary angles are the ones whose sum is $180°$

So, an angle equal to its supplement will be

$$\begin{gathered} \Rightarrow a+a={180}^{\circ } \\ \Rightarrow 2a={180}^{\circ } \\ \Rightarrow a=\frac{{180}^{\circ }}{2} \\ \Rightarrow a=90° \end{gathered}$$

Therefore, the measure of the angle which is equal to its supplement is $90°$.