Question

prove that a cyclic parallelogram is a rectangle ?​

Answer 1

Answer:

Explanation:

Given,

ABCD is a cyclic parallelogram.

To prove,

ABCD is a rectangle.

Proof:

∠1+∠2=180°     Opposite angles of a cyclic parallelogram

Also, Opposite angles of a cyclic parallelogram are equal.

Thus,

∠1=∠2

⇒∠1+∠1=180°

⇒∠1=90°

One of the interior angle of the parallelogram is right angled. Thus,  

ABCD is a rectangle.

solution

Answer 2

Answer:

A special quadrilateral with it's properties called " cyclic quadrilateral"

Explanation:

* opposite Angles of a cyclic quadrilateral are supplementary * if a pair of opposite Angles of a quadrilateral is supplementary , then the quadrilateral is cyclic .