Question

The measures of two base angles of an isosceles trapezoid are 7x – 12 and 5x + 6. What is the measure of x?

Select one:
a. 3
b. 5
c. 7
d. 9

Answer 1

Because base angles on an isosceles trapezoid are equal you set up this equation
7x - 12 = 5x + 6
-5x+12 -5x +12
2x = 18
/2 /2
x = 9