CPM Homework Help : GC Problem 1-114

Multiple Choice: Which equation below correctly represents the relationship of the sides given in the diagram at right?

A trapezoid with horizontal parallel bases has a left side length of 3, x minus 2 and a right side length of 2, x + 17. Both sides are marked with two tick marks.

$3x-2+2x+17=360º$

$3x-2+2x+17=180º$

$3x-2+2x+17=90º$

$3x-2=2x+17$

Hint:

Remember that sides with the same marks have the same length.

Answer:

(d)