Given a triangle ABC (see the figure above)
with the squares ABDE, BCFG, ACHJ, and HJKL. If M is the center of
square HJKL, prove that lines DH, GJ, and BM are concurrent at O.
Dynamic Geometry Environment (DGE) or Interactive Geometry Software
(IGS) of Problem 902
The interactive demonstration
above was created with GeoGebra.
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GeoGebra
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See the static diagram of problem 902
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