If the sum of two angles is 90° then they are said to be complementary angles.
If the sum of two angles is 180° then they are said to be supplementary angles. If two angles are supplementary then they are the supplement to each other.
It is the pair of two angles which are placed next to each other.
Adjacent angles have-
A pair of adjacent angles whose non-common arm makes a single line i.e. they are the opposite rays.
A linear pair is also a pair of supplementary angles as their sum is 180°.
The above pair of angles is –
When two lines intersect each other then they form four angles. So that