1 ---- Complementary angles
2 ---- Vertical angles.
3 ---- Adjacent angles
4 ---- Supplementary angles
Complementary angles--
Two angles are said to be complementary if the sum of two angles is 90 degree.
Supplementary angles--
Two angles are said to be supplementary if the sum of two angles is 180 degree.
Vertical angles--
It is the pair of angles that are made by two intersecting rays.
Angles with sides that form two pairs of opposite rays .
Adjacent angles--
The angles which have a common vertex and a common side but no common interior points.
