In triangle ABC and triangle DEF ,AB=DE,AB//DE , BC =EF .vertices A,B and C are joined to vertices D, E and F respectively. show that 1. quadrilateral ABED is a parallelogram .2. quadrilateral BEFC is a parallelogram. 3. AD//CF and AD= CF .4. quadrilateral ACFD is a parallelogram. 5.AC=DF.6. triangle ABC= triangle DEF
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