See complete Problem 245 at:

gogeometry.com/problem/p245_parallelogram_equilateral_triangle_congruence.htm

Level: High School, SAT Prep, College geometry

Post your solutions or ideas in the comments.

## Thursday, February 5, 2009

### Elearn Geometry Problem 245: Parallelogram with Equilateral triangles. Congruence

Labels:
congruence,
equilateral,
parallelogram,
triangle

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BE=AD=EC ; AB=DF=CF ; angle ABE = angle ADF = angle ECF , so the triangles ABE , FDA , FCE are congruents, so AE=AF=EF.

ReplyDeleteSo what if i want to find the value of BEC or BCE angle?

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