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Quadrilateral ABCD is inscribed in a circle. What is the measure of A?

Quadrilateral ABCD is inscribed in a circle. What is the measure of A?
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Quadrilateral ABCD is inscribed in a circle. What is the measure of A?

Quadrilateral ABCD is inscribed in a circle. What is the measure of A?-example-1
User Vincent Ducastel
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1 Answer

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3x + 6 + x + 2 = 180
4x = 180 - 8
4x = 172
x = 43

A = 3x + 6 = 3×43 + 6 = 129 + 6 = 135
User Intelfx
by
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