On a piece of paper, use a protractor to construct a triangle with angle measures of 50° and 70°

What is the measure of the third angle?

A.) 60°
B.) 80°
C.) 100°
D.) 180°

Respuesta :

It has to be A since the total sum of the angles of a triangle is 180. 50 + 70 is 120 and then 180 - 120 is 60. So the answer is 60.