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Trapezoid WXYZ is isosceles. Angle WZY measures (8x – 3) and angle XYZ measures (7x + 2). Find the measure of angle WZY.

Am I supposed to combine like terms? That's what I think but I'm not sure..

Question

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Trapezoid WXYZ is isosceles. Angle WZY measures (8x – 3) and angle XYZ measures (7x + 2). Find the measure of angle WZY.

Am I supposed to combine like terms? That's what I think but I'm not sure..

anonymous · Answer

These are my options:

[A] 43°
[B] 143°
[C] 5°
[D] 37°

directrix · Answer

Base angles of isosceles trapezoids are congruent.
So, 8x - 3 = 7x+2 
Solve for x and substitute into 8x-3  to get the angle measure.