Step-by-step explanation:

Q1) what is Adjacent angle ?

Adjacent angles are two angles that have a common vertex and a common side but do not overlap...

Q2) what is linear pair of angle ?

Linear pair of angles are formed when two lines intersect each other at a single point. The angles are said to be linear if they are adjacent to each other after the intersection of the two lines. The sum of angles of a linear pair is always equal to 180°.

Q3) what is vertically opposite angle ?

The angles opposite each other when two lines cross. They are always equal.

Q1) The angles formed on same line segment.

Q2) Linear pair of angle refers to two angles on same line segment having the sum of 180°.

Q3) These angles are formed on intersecting points of two or more lines or line segments and have the same measurement.

(The above attachment is given for better understanding. Hope you will get your wanted answer.)