Angle Relationships

Front

What are corresponding angles?

Back

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

Front

Define alternate interior angles.

Back

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

Front

What are alternate exterior angles?

Back

Alternate exterior angles are pairs of angles that lie outside two parallel lines on opposite sides of 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

If two angles are supplementary, what does that mean?

Back

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

Front

If two angles are complementary, what does that mean?

Back

Two angles are complementary if the sum of their measures is 90 degrees.

Front

What is the measure of angle 1 if angle 2 is 50 degrees and they are supplementary?

Back

Angle 1 = 130 degrees (because 180 - 50 = 130).

Front

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

Back

The corresponding angle is also 70 degrees.

Front

What is the relationship between angle 4 and angle 6 if they are vertical angles?

Back

Angle 4 = Angle 6 (they are equal in measure).

Front

If angle 5 is 120 degrees, what is the measure of its alternate interior angle?

Back

The alternate interior angle is also 120 degrees.