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Quadrilateral abcd is inscribed in this circle. what is the measure of angle a?

Quadrilateral abcd is inscribed in this circle. what is the measure of angle a?
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Quadrilateral abcd is inscribed in this circle.
what is the measure of angle a?

Quadrilateral abcd is inscribed in this circle. what is the measure of angle a?-example-1
User Ngodup
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1 Answer

4 votes
Look at the picture.


(x+2)+(3x+6)=180\\\\4x+8=180\ \ \ \ |-8\\\\4x=172\ \ \ \ |:4\\\\x=43



m\angle A=(3\cdot43+6)^o=135^o
Quadrilateral abcd is inscribed in this circle. what is the measure of angle a?-example-1
User Jason Song
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8.3k points
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