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Question

In ∆ABC, D and E are points on sides AB and AC respectively such that AD ✕ EC = AE ✕ DB. Prove that DE || BC.


Solution

Given: In, D and E are points on sides AB and AC such that

To Prove:

Proof:

Since



∴ DE || BC             (Converse of basic proportionality theorem)


Mathematics
RD Sharma (2016)
Standard X

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