Sunday, January 4, 2009

Elearn Geometry Problem 219: Rhombus, perpendiculars, arithmetic mean

 Geometry Problem 219. Rhombus, perpendiculars, arithmetic mean.

See complete Problem 219 at:
gogeometry.com/problem/p219_rhombus_perpendicular_arithmetic_mean.htm

Level: High School, SAT Prep, College geometry

1 comment:

  1. clearly HM=HO=HG=x and OF=NF/2, so
    a+x=(b+c+2x)/2
    a=(b+c)/2

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