Question

The angels with a common vertex and a common arm are called ------- angle.

Answer 1

according to its a adjacent angle

Answer 2

In the figure below, ∠BOA and ∠AOC are adjacent angles. Their common arm is OA and common vertex is 'O'. Vertically opposite angles: When two lines intersect, the angles formed opposite to each other at the point of intersection (vertex) are called vertically opposite angles.