Math CentralQuandaries & Queries


Question from Nazrul, a teacher:

From any point p lying on the circumcircle of the triangle perpendiculars PD , PE are drawn on BC,CA respectively. The line segment ED intersects at the point 0 ; prove that PO ⊥ AB ( PO is perpendicular to AB ).

Look up Simson line on the internet (Wikipedia, for example).


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