perplexus.info :: Shapes : Quadrilateral and Cyclic Query

Quadrilateral and Cyclic Query (Posted on 2016-03-06)

The quadrilateral PQRS contains a circle which touches each side.
It is known that: PQ = a, QR =b, RS = c and SP=d, and:
Area of PQRS = √(abcd).

Is PQRS always cyclic? Give reasons for your answer.

No Solution Yet Submitted by K Sengupta

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