Angles in a convex pentagon?
heitzig at mbox.math.uni-hannover.de
Fri May 18 15:21:41 PDT 2001
Does anyone know whether the following is true in a convex pentagon ABCDE:
Given that EA>AB>BC and CD<DE<EA, the angle sum DEA+EAB is at most 4*pi/3.
I tried hard but could neither prove nor disprove it :-)
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