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| Inscribe Quadrilateral, Get Diophantus (Posted on 2007-04-09) |
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PQRS is a cyclic quadrilateral with PR perpendicular to QS while PR meets QS at H. T is the radius of the circumscribed circle.
Prove that:
HP2 + HQ2 + HR2 + HS2 = 4T2
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 | Solution | Bractals | 2007-04-09 20:42:12 |
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