Question

ABCD is a cyclic quadrilateral such that

∠A = 90°, ∠B = 70°, find ∠C and∠D .​

Answer 1

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Answer 2

Answer:

C=90°

D=110°

Step-by-step explanation:

in cyclic quadrilateral, opposite angles are supplementary

angle A+angleC=180

90°+angle C=180°

angle C=180°-90°

angle C=90°

Then angle B and angle D are supplementary

B+D=180°

70°+D=180°

D=180°-70°

D=110°