Question

One of the angle of a triangle is ${50}^{\circ }$ and the other two angles are equal. Find the measure of each of the equal angles.

Answer 1

Let the equal angles be $x,x$

Then by angle property:

$\Rightarrow x+x+{50}^o={180}^o$

$\Rightarrow 2x={130}^o$
$\Rightarrow x=\frac{{130}^o}{2}$
$\Rightarrow x={65}^o$

Angles are ${65}^o,{65}^o$