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.

Answer 2

The measure of all the sides of rectangle is 90 degree

and if u add the opposite sides of rectangle that is 90 degree +90 degree= 180degree

hence rectangle is cyclic quadrilateral

opposite sides are supplementary