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prove a cyclic parallelogram is rectangle

Asked by 7th June 2008, 7:27 PM
Answered by Expert
Answer:

Combine the two properties -

1. Opposite angles of a parallelogram are equal.

2. Opposite angles of a cyclic quadrilateral are supplementry.

It means each of opposite angles of a cyclic parallelogram is a right angle (180 / 2 = 90 degree).

So, all angles are right angles in cyclic parallelogram which makes it a rectangle.

Answered by Expert 25th July 2008, 5:00 PM
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