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Quadrilateral ABCD is inscribed in this circle. what is the measure of angle C?

Quadrilateral ABCD is inscribed in this circle. what is the measure of angle C?-example-1
User Minghua
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Because opposite angles in a quadrilateral inscribed in a circle are supplementary.

angle c = 180 - 2x - 38
angle c = 142 - 2x
User Selvam Rajendran
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