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q: through the midpoint m of side CD of parallelogram abcd line bm is drawn interesting AC in l and ad produced at e.
prove El=2bl
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Step-by-step explanation:
ΔBCM & ΔEDM are similar. MD=CM => BC = DE, as AD = BC, AE = 2 BC
ΔACL & ΔAEL are similar. EL / BL = AE / BC = 2
So EL = 2 BL
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