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

Identify the angle pair: ∠8 and ∠5.

Back

These angles are vertical angles.

Front

What is the sum of angles on a straight line?

Back

The sum of angles on a straight line is 180 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 lines.

Front

What are corresponding angles?

Back

Corresponding angles are pairs of angles that are in the same position on two parallel lines in relation to a transversal.

Front

What are supplementary angles?

Back

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

Front

How do you find the missing angle if one angle is 70 degrees?

Back

If one angle is 70 degrees and they are supplementary, the missing angle is 180 - 70 = 110 degrees.

Front

What is the measure of vertical angles?

Back

Vertical angles are always equal in measure.

Front

Identify the angle pair: ∠COB and ∠AOD.

Back

These angles are vertical angles.

Front

What is the relationship between alternate exterior angles?

Back

Alternate exterior angles are equal when two parallel lines are cut by a transversal.