what are adjacent angles in square
Here is the answer to your query.
Pair of interior angles in any quadrilateral are said to be adjacent angles if they share a common side.
In the square ABCD shown above angles A and B share a common side AB.
Thus, ∠A and ∠B is a pair of adjacent angles. Similarly, the remaining pair of opposite angles for the square shown above are: ∠B and ∠C, ∠C and ∠D, ∠A and ∠D.