Question

prove that a cyclic parallelogram is a rectangle​

Answer 1

Answer:

Let ABCD be a cyclic parallelogram.

 ... (1)

(Opp. angles of a cyclic quadrilateral)

We know that opposite angles of a parallelogram are equal.



From equation (1),



Parallelogram ABCD has one of its interior angles as 90°. Therefore, it is a rectangle.

Answer 2

Answer:

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