perplexus.info :: Geometry : Collinear Feet

Collinear Feet (Posted on 2010-09-26)

Let AA', BB', and CC' be the altitudes of
acute triangle ABC.

Prove that the feet of the perpendiculars
from A' to AB, BB', CC', and AC are collinear.

See The Solution Submitted by Bractals

Rating: 3.0000 (2 votes)

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	Subject	Author	Date
	Possible spoiler	broll	2010-09-26 12:07:58

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