Question

When m<2=m<6○AD//BC○DC//AB

Answer 1

Line BD is intersecting DC & AB as well as AD & BC

since, it is given that ,

`m\angle2=m\angle6`

In the case of lines AD & BC,

angle 2 and angle 6 are the pairs of alternative interior angle,

since , from the properties of alternative interior angles,

if the alternative interior angles, are equal then the lines are parallel.

so, lines AD is parallel to BC.