On a piece of paper, use a protractor to construct a triangle with angle measures of 50° and 70º.
what is the measure of the third angle?

I say its 60 degrees. 
All you have to know to answer this question is that all triangle angle measures in total are 180 degrees. So you only need to subtract 120 (70+50) from 180 which gives you 60. That would be the measurement of your third angle. 
Hope my explanation helps :D

Did you get there answer to 44?