Simson-Wallace variation

Autor:M. Pilar Vélez

Construct a triangle ABC and free point D. Consider the perpendicular lines to DA, DB and DC. Ask for the locus of D so that these perpendicular lines are concurrent.

Simson-Wallace variation (M. de Guzman's book, pp45)

Nuevos recursos

巧算長方形周界
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Loc Geometric: Mediana.
Number of tangent
Greek MATHS book (translated from english)
angle at centre/circumference prop. to arc (not chord)

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Traslación
Recta Tangente o Tangente
Características estadísticas
Rectángulo
Simetrías