Andrew M. answered 09/25/18
Tutor
New to Wyzant
Mathematics - Algebra a Specialty / F.I.T. Grad - B.S. w/Honors
The three angles of a triangle add up to 180 degrees.
Given 37 and 72 degrees just take the sum of those and subtract that from 180
180 - (37 + 72) = 180 - 109 = 71 degrees