Question

The measures of two angles of a triangle are given. Find the measure of the third angle.

$90°,60°$

Answer 1

Find the measure of the third angle:

Let the third angle be $x$.

We know from the angle sum property of the triangle

Sum of all interior angles of a triangle is $180°$.

$\Rightarrow$$x+90°+60°=180°$

$\Rightarrow$ $x=180°-150°$

$\Rightarrow$ $x=30°$

Thus, the required third angle will be $30°$.