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Quadrilateral ABCD is inscribed in a circle. What’s the measure of angle B

Quadrilateral ABCD is inscribed in a circle. What’s the measure of angle B-example-1

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Well the equation is 6x + x + 19 = 180 or 7x + 19 = 180. You subtract 19 from 180 to get 161. Then you divide 161 by 7 to get x = 23. Finally, you plug x in to get 6(23) + 19 or 157°
User Nafis Ahmad
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