Question

5. 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. Show that BEFD is a
parallelogram.
ADD DD​

Answer 1

Answer:

since, EF || AB

EF || BD (since AD=DB and D is the mid point so obviously when it is parallel to the whole line, it'll be parallel to it's half also)