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Mathematics, 01.02.2021 15:40 Supermate11

Please Help! In Triangle ABC, D is a point on side AB, E is a point on line AC and DE is a parallel to BC. Prove that AD:DE = AB:BC(first, prove AD:AB=DE:BC. Then interchange the means of the proportion

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Please Help! In Triangle ABC, D is a point on side AB, E is a point on line AC and DE is a parallel...

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