SIGNS The medical sign shown is a trapezoidal prism. The
front face of the sign is an isosceles trapezoid. WX = 2x-2,
YZ=2x+6, WZ = 4x + 5, and XY = 5x - 3.
a. Prove x = 8.
b. Find mZZ if mZW = 106°.
c. Find the perimeter of the front face of the sign in inches.
