What is an adjacent size I can't understand it properly ??
Hi...!!
Any two sides with a common vertex are called adjacent sides.
For example:
Consider, a quadrilateral ABCD.
(1) AB and BC are two sides with a common vertex B. Thus, AB & BC are the adjacent sides.
(2) AD and CD are two sides with a common vertex D, so AD & CD are the adjacent sides
(3) AB & CD are two sides with no common vertex, so AB & CD are not adjacent sides.
Cheers...!!!