Question

In triangle ABC. AB =5CM BC =8CM AND. CA =7CM .If D and E are respectively the mid points of AB and BC , determine length of
DE

Answer 1

de=3.5 cm by the mid point theorem.

Answer 2

Since D and E are midpoints of AB and BC respectively
DE is parallell to AC ....BY MIDPOINT THEOROM
and
DE=1/2×AC.....BY MIDPOINT THEOROM
DE=1/2×7cm
=3.5cm