geomotry math qestions

Question

Two angles of a triangle have equal measures. If the third angle

measures 120°, what is the measure of each of the equal angles?

how do you get the awnser for this eqasion

Answer 1

The angles of a triangle add up to 180. If there are 2 angles that are the same, that is your value you are trying to solve for.

Let x = unknown angle

x+x+120=180 Combine like terms

2x+120=180 Subtract 120 from both sides

2x+120-120=180-120 Simplify

2x=60 Divide both sides by 2

2x/2=60/2 Simplify

x=30