Simson's line

Autor: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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Triangle Flexer
Circles - Relative Positions
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רישום חופשי
Graph of y = ax² + bx + c

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Talk Like a PIrate Final
myfirstchallange
Distance Time Graphs and Pythagorean Theorem
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Square construction straight edge and compass

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Kegelschnitte
Graph
Bruchrechnen oder Brüche
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Balkendiagramm oder Säulendiagramm