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 Congruent Angles?

Back

Angles that have the same measure are called congruent angles.

Front

What are Supplementary Angles?

Back

Two angles are supplementary if the sum of their measures is 180 degrees.

Front

What are Corresponding Angles?

Back

Corresponding angles are angles that are in the same position on two parallel lines cut by a transversal. They are equal in measure.

Front

What are Alternate Interior Angles?

Back

Alternate interior angles are pairs of angles on opposite sides of the transversal but inside the two lines. They are equal when the lines are parallel.

Front

What are Same Side Interior Angles?

Back

Same side interior angles are pairs of angles on the same side of the transversal and inside the two lines. They are supplementary when the lines are parallel.

Front

What are Same Side Exterior Angles?

Back

Same side exterior angles are pairs of angles on the same side of the transversal and outside the two lines. They are supplementary when the lines are parallel.

Front

What is the value of x if angle A is 40 degrees and angle B is x degrees, and they are supplementary?

Back

x = 140 degrees.

Front

If two angles are congruent, what can we say about their measures?

Back

Their measures are equal.

Front

What is the relationship between angle 8 and angle 6 if they are vertical angles?

Back

Angle 8 is equal to angle 6.