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Nitobuendia · Answer 1 · 2020-11-19T19:31:20+0000

Answer:

b=40

Explanation:

Since PQ is equal to RQ triangle PQR is isosceles. Angle PRQ is equal to 40 degrees because of supplementary angles. And since triangle PQR is isosceles angle b is equal to angle PRQ which means angle b is equal to 40

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