SOLUTION: Two angles of a triangle are equal. The third angle of this triangle is twice as large as the sum of the first two angles. How long is each angle?

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Question 431668: Two angles of a triangle are equal. The third angle of this triangle is twice as large as the sum of the first two angles. How long is each angle?
Answer by jorel1380(3719) About Me  (Show Source):
You can put this solution on YOUR website!
Let's call the angles X,Y, and Z.
angle X=angle Y
angle Z=2(angle X+angle Y)
angleX+angleX+2(2angleX)=180
6 angle X= 180
X=30 degrees
Y=30 degrees
Z=120 degrees