What is the measure of x? a.36 b.72 c.144 d.360

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What is the measure of x?? Your answer is A: 36

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Since it's a quadrilateral, the measures of the angles have to add up to 360. First, subtract 216 (108×2) from 360 to get 144. Now divide 144 by 4 since you have 4x's that must add to 144. When you do the math, you'll find x=36. So the answer is A.