Question

Prove that any rectangle is a cyclic quadrilateral ​

Answer 1

Answer:

In ABCD,

∠A = 90°{∵ angle of a rectangle is 90°.}

∠C = 90° {opposite angles are equals}

⇒∠ A + ∠ C = 180°

If opposite angles are supplementary, the quadrilateral is cyclic.

∴ ABCD is cyclic.

Hope it helps you..

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Answer 2

rectangle has all its angle of measure 90 and acyclic quadrilateral has sum of opposite angle 180