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Question

In triangle ABC, angle B is obtuse. D and E are mid-points of sides AB and BC respectively and F is a point on side AC such that EF is parallel to AB. Then, BEFD is a parallelogram. State True or False.

A
True
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B
False
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Solution

The correct option is A True
Given: D is mid point of AB and E is mid point of BC, F is any point on AC and EFAB
Now, in ABC,
E is mid point of BC and EFAB
By Mid point Theorem, F is mid point of AC
Also, D is mid point of AB and F is mid point of AC
Hence, by mid point theorem, DFBE
Since, DFBE and EFABorBD
Hence, BEFD is parallelogram.

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