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See if you can answer the following questions about angle properties.

As you saw previously, there are quite a few angle properties associated with transversals. However, most of the properties are related to angles that are equal in degree because of where they occur in a figure that includes parallel lines and a transversal.

Use the matching activity below to see if you can match each type of angle with its property. If you do not match them correctly the first time, look back through the tabs and try again.

Angle Properties

Consecutive Interior Angles

Alternate Exterior Angles

Vertical Angles


Corresponding Angles 


These pairs of angles are equal. They occur on opposite sides of the transversal outside of the parallel lines.

These pairs of angles are supplementary. They occur on the same side of the transversal on the inside of the parallel lines.

These pairs of angles are equal. They occur on the same side of a transversal in the same position.
These pairs of angles are equal. They occur on opposite sides of the transversal and on the opposite sides of the parallel lines.

Excellent! You got them all correct.
The answers with checkmarks are correct. Fix any answers without checkmarks and try again.