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02/06/2021 12:04 pm
In ΔABC, given as, DE || AC
Thus, by using Basic Proportionality Theorem, we get,
∴BD/DA = BE/EC ………………(i)
In ΔABC, given as, DF || AE
Thus, by using Basic Proportionality Theorem, we get,
∴BD/DA = BF/FE ………………(ii)
From equation (i) and (ii), we get
BE/EC = BF/FE
Hence, proved.