Home Geometry Problems All Problems Area of a Triangle Visual Index 431-440 Solution / comment        By Antonio Gutierrez
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Problem 433: Quadrilateral, Triangle, Area, Proportion, Measurement, Similarity

The figure shows a quadrilateral ABCD with Formula conclusion to prove. If S, S1, and S2 are the areas of triangles CED, BCF, and ADF, prove that S = S1 + S2.


Quadrilateral, Area, Proportion, Parallel, SImilarity