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Math Forum » Discussions » Math Topics » geometry.pre-college.independent

Topic: Pentagram geometry
Replies: 3   Last Post: Oct 28, 2008 3:11 PM

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Kaisdelvar

Posts: 3
Registered: 10/28/08
Pentagram geometry
Posted: Oct 28, 2008 11:12 AM
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Does anybody have any idea what to do to prove that FG is concurrent to DE?

[img]http://img241.imageshack.us/img241/9613/pentagramvy2.png[/img]

The only stuff we know from the task is:
AD=AE
4 * DB * EC = DE^2



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