Any two sides that share a common end point or vertex are called as Adjacent Sides.
Sides AB and AC are adjacent as they meet at the common end point A.
A. AB and AD
B. AB and EF
C. AB and HG
D. AB and CD
Correct Answer: A
Step 1: Adjacent sides share a common end point or vertex.
Step 2: So, sides AB and AD are adjacent as they share the common end point A.