Geometry Problems, Online Education

Problem 531: Triangle, Angle Bisector, Midpoint, Parallel, Perimeter, Semiperimeter. Level: High School, SAT, College Geometry

The figure shows a triangle ABC of semiperimeter "s" with the angle bisector BD. If E is the midpoint of AC and EF is parallel to BD, prove that s = AF + AE = CE + BC + BF.
 

Triangle, Angle Bisector, Midpoint, Parallel, Perimeter
 

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