Geometry Problem 319: Triangle, Altitudes, Perpendiculars, Collinear points

Geometry, Theorems and Problems

The figure shows a triangle ABC and the altitudes AD, BH, and CE. HF is perpendicular to AB, HG perpendicular to AD, HM perpendicular to CE, and HN perpendicular to BC. Proved that F, G, M, and N are collinear. View or Post a solution.
 

Triangle, Altitudes, Collinear Points. Geometry Help
 
 

Poster of Problem 319: Sketching, Typography, Art using iPad Pro

Poster of Problem 319: Sketching, iPad, Typography, Art, Triangle, Altitudes, Perpendiculars, Collinear points.

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