Q. 15 B

# In the trapezium ABCD, AB || DC and AB = 7 cm and DC = 5 cm. The midpoints of AD and BC are E and F respectively, the length of EF is

A. 5 cm

B. 7 cm

C. 6 cm

D. 12 cm

Answer :

Since AB||DC and E and F are midpoints of AD and BC,

By using the theorem:-

The line segment joining the midpoints of two side of a triangle is parallel to the third side and equal to half of it, we get

⇒ AB||CD||EF

Also,

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