Question

Those two angles whose vertex is common, one arm is
common and intersection of their interioris
empty, then angles are known as ​

Answer 1

Adjacent Angles: When two angles have a common arm and common vertex and their non-common arm are the either side of common arm, then they are called adjacent angles.

Answer 2

Answer:

Two angles are called adjacent angles, if they have a common vertex and a common arm but no common interior points. A linear pair is a pair of adjacent angles whose non-common sides are opposite rays.