See complete Problem 173 at:

www.gogeometry.com/problem/p173_quadrilateral_area_midpoint.htm

Quadrilateral with Midpoints, Triangles, Areas. Level: High School, SAT Prep, College geometry

Post your solutions or ideas in the comments.

## Sunday, September 7, 2008

### Elearn Geometry Problem 173

Labels:
area,
midpoint,
quadrilateral,
triangle

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[EAFC]=[EAF]+[EFC]=[EFD]+[BFE]=[BFDE]

ReplyDeletethen S_1+S_2=S_3+S_4 is obvious