Angle Relationships

Front

What are Vertical Angles?

Back

Vertical angles are the angles opposite each other when two lines intersect. They are always equal in measure.

Front

What are Corresponding Angles?

Back

Corresponding angles are pairs of angles that are in similar positions at each intersection where a straight line crosses two others. They are equal when the lines are parallel.

Front

What are Alternate Interior Angles?

Back

Alternate interior angles are pairs of angles that lie between two lines and on opposite sides of a transversal. They are equal when the lines are parallel.

Front

What are Alternate Exterior Angles?

Back

Alternate exterior angles are pairs of angles that lie outside two lines and on opposite sides of a transversal. They are equal when the lines are parallel.

Front

What are Consecutive Interior Angles?

Back

Consecutive interior angles are pairs of angles that lie between two lines on the same side of a transversal. They are supplementary when the lines are parallel.

Front

What is the relationship between Vertical Angles?

Back

Vertical angles are always equal to each other.

Front

How do you identify Corresponding Angles?

Back

Corresponding angles can be identified by their position; they are in the same relative position at each intersection.

Front

What is the sum of Consecutive Interior Angles?

Back

The sum of consecutive interior angles is 180 degrees when the lines are parallel.

Front

What is the relationship between Alternate Interior Angles?

Back

Alternate interior angles are equal when the two lines are parallel.

Front

What is the relationship between Alternate Exterior Angles?

Back

Alternate exterior angles are equal when the two lines are parallel.