Adjacent Angles and Pairs of Angles

When you bisect an angle, you create two angles of equal measures. The two angles are called adjacent angles.

Angles 1 and 2 are examples of adjacent angles. They share a common ray and have the same vertex.

Adjacent Angles: Adjacent angles are angles that share a common side and have the same vertex, but have no interior points in common.

Linear Pair: Two angles form a linear pair if and only if they are adjacent and their non common sides are opposite rays

Read the explanation below to find out more about adjacent angles and pairs of angles.

Practice: Practice: Answer the exercises below about adjacent angles and pairs of angles.