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Collinear Feet (Posted on 2010-09-26) Difficulty: 3 of 5
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
Hints/TipsPossible spoilerbroll2010-09-26 12:07:58
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