Those angles are called Alternate Exterior Angles. When two lines are crossed by another line (which is called the Transversal), the pairs of angles on opposite sides of the transversal but outside the two lines are called Alternate Exterior Angles.
adjecent angles
adjacent angles
Complementary angles
Adjacent angles.
Adjacent angles.
adjacent
adjecent
adjacent angles
An adjacent angle
adjacent angles.
AdjacentAngles
opposite angles