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Rette per l'ortocentro: riflessione sui lati

Author:
Lamberto Lamberti
Topic:
Orthocenter, Reflection
Reflect a line passing through the orthocenter H of ΔABC in the three sidelines. The three reflections concur on the circumcircle of the triangle. http://www.cut-the-knot.org/Curriculum/Geometry/OrthoReflections.shtml

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