Find the length of EF in the parallelogram
Properties of parallelograms is a free educational video by MathPlanetVideos.It helps students in grades HS practice the following standards HSG.CO.C.11.
1. HSG.CO.C.11 : Prove theorems about parallelograms. Theorems include: opposite sides are congruent, opposite angles are congruent, the diagonals of a parallelogram bisect each other, and conversely, rectangles are parallelograms with congruent diagonals..
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