I need to find the measure of each angle. I don't know where or how to start?

Answer:
40°
Step-by-step explanation:
Every triangle adds up to 180°
So to get the angle of the triangle we already have two values of:
[tex]180 - 79 - 52 = 50[/tex]
Then since it's at a 90° angle we can subtract 50 to get:
40° as the other part of the right angle.
And applying the 180 rule again:
[tex]180 - 100 - 40 = 40[/tex]