Fun with num3ers
Sunday, May 15, 2011
The 80-80-20 Triangle
Is there anything else that could be said about the 80-80-20 triangle?
http://www.cut-the-knot.org/triangle/80-80-20/index.shtml
Problem 358. Isosceles triangle 80-80-20, Circle, Angles, Congruence.
http://gogeometry.com/problem/p358_isosceles_triangle_80_80_20_congruence.htm
Problem 274: Isosceles Triangle, 80-80-20, Angles
http://gogeometry.com/problem/p274_isosceles_triangle_80_80_20_angles.htm
http://mathcircle.berkeley.edu/BMC4/Handouts/geoprob.pdf
http://math.stackexchange.com/questions/6942/finding-an-angle-within-an-80-80-20-isosceles-triangle
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