Question

how can you find the missing measure of an angle in a triangle if you know the measure of two of the interior angles?

Answer 1

the sum of all the angles of the triangle should be 180°. so add the rest two measure of the angles, and subtract them from 180 to get the missing measure of an angle.

Answer 2

Add up the two angles you know and subtract that amount from 180 and you have measure of the missing angle