Simson's line

Autore:Terry Tam

P is a point on a circle, and ABC is an inscribed triangle. Prove that the feets of altitudes of point P on 3 sides of the triangle are collinear. (Hint: Consider PABC as a cyclic quadrilateral)

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Linear Equation Graphs: Thin Slice
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Squares Question
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Absolute Value Functions f(x)=a |x - h| + k

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Common Notion 4

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Teoria degli insiemi
Circocentro o circonferenza circoscritta
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