Question

On a piece of paper, use a protractor to construct a triangle with angle measures of 30° and 50º. What is the measure of the third angle?

Answer 1

100º. This is because a triangle has a sum of 180º, so if you do 180º-30º (gives you 150º) and then 150º - 50º, you get 100º for the third angle. 

Hope this helped! Good luck :)

Answer 2

180 - 50= 130 -30= 100