Question

D and E are the midpoints of side AB and AC of a triangle ABC, respectively and BC = 6cm. If DE || BC, then find the length of DE.​

Answer 1

Answer:

It is given that,

D and E are the midpoint of sides AB and AC

BC=5.6 cm and ∠B=72

o

To find: DE

In △ABC,

D and E are the mid point of the sides AB and AC

⇒DE∥BC and DE=

2

1

BC[ Using mid point theorem ]

∴DE=

2

1

×5.6=2.8 cm