Simson-Wallace variation

Auteur: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)

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အခြေခံ data အခေါ်အဝေါ်များ

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