Simson's line

Author: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)

New Resources

International Day of Mathematics 2025
Balls in an Urn
Nikmati Keunggulan Di Bandar Judi Terpercaya
探究長方形對角線上的正方形數目
seo tool

Discover Resources

Systems of Inequalities
Centroid
R3 2.5
Corkscrew Surface

Discover Topics

Circle
Scalene Triangles
Polynomial Functions
Calculus
LCM and GCD