Missing Angles and Angle Relationships

Front

What are corresponding angles?

Back

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

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 supplementary angles?

Back

Supplementary angles are two angles whose measures add up to 180 degrees.

Front

What are complementary angles?

Back

Complementary angles are two angles whose measures add up to 90 degrees.

Front

What are alternate interior angles?

Back

Alternate interior angles are pairs of angles that are on opposite sides of the transversal and inside the two parallel lines. They are equal in measure.

Front

What is the relationship between angle pairs formed by a transversal?

Back

When a transversal crosses parallel lines, it creates several angle pairs: corresponding angles, alternate interior angles, alternate exterior angles, and consecutive interior angles, each with specific relationships.

Front

If angle 4 is 55 degrees, what is the measure of angle 2?

Back

Angle 2 is also 55 degrees because it is a vertical angle to angle 4.

Front

What is the measure of angle 5 if angle 4 is 55 degrees?

Back

Angle 5 is 125 degrees because it is supplementary to angle 4.

Front

What are the measures of vertical angles?

Back

Vertical angles are always equal in measure.

Front

If angle 1 is 70 degrees, what is the measure of angle 3?

Back

Angle 3 is also 70 degrees because it is a vertical angle to angle 1.