Posted by Ian on Friday, April 12, 2013 at 5:07am.
In triangle ABC, D is the midpoint of AC and E is the midpoint of AB. BD and CE are perpendicular to each other and intersect at the point G. If AB=7 and AC=9, what is the value of BC^2?

Maths  Steve, Friday, April 12, 2013 at 11:19am
This very kind of problem is discussed at
http://www.qbyte.org/puzzles/p100s.html 
Maths  abhishek agrawal, Friday, April 12, 2013 at 11:06pm
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