PSAT Math Grid-Ins Question 125: Answer and Explanation
Question: 125
In the isosceles trapezoid above, what is the measure of the smallest interior angle?
Correct Answer: 75
Explanation:
360 = 105 + 105 + x + x
Combine like terms:
360 = 210 + 2x
Subtract 210 from both sides:
150 = 2x
Dividing by 2 tells you that x = 75. Therefore, the smallest interior angle is 75°.
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