Dynamic Geometry 1481 with Solution: Five Tangential or Circumscribed Quadrilaterals, Pitot Theorem, Congruence, Step-by-step Illustration
Let ABCD be a tangential or circumscribed quadrilateral (see the dynamic figure below). Lines EF and GH intersect at P so that AEPH, BGPE, CFPG and DHPF are circumscribed quadrilaterals. Prove that EF and GH are congruent.
Static Diagram of Geometry Problem 1481
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Interactive step-by-step animation using GeoGebra
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