Question

Quadrilateral B, I, R, D is inscribed in circle O. What is the measure of \angle D∠Dangle, D?

Answer 1

Here is your answer for you

Answer 2

Answer

∠D = 63°

Step-by-step explanation:

Because all four corners of the quadrilateral rest on the circumference of the circle, then BIRD is a cyclic quadrilateral (circle theorem).

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