Question

figure efgh is a trapezoid. what is the measure of angle f? (9x)° (14x)° (4x)° 100° 130° 140° 150°

Explanation:

Step1: Sum of quadrilateral angles

Sum = 360°

Step2: Set up equation

9x + 14x + 4x + 90 = 360

Step3: Solve for x

27x = 270 → x=10

Step4: Calculate angle F

14x = 14×10=140°

Answer:

C. 140°