Explain what the result of your proof tells you about angles a and b. specifically, if you measured one angle, what would you know about the other?

20

Explanation:

It's like the 3-4-5 rule. You have other like rules, for ex:

3-4-5

6-8-10

9-12-15

12-16-20

15-20-25

All of those numbers represents each side of the triangle, because when you split a square in half, you get a triangle. So, you have 3 sides, 1 side measures 12 and another 16, so that leaves the last side to measure 20.

Hope this helps you out!! (: