3.2 Angle Measures

Front

What are alternate exterior angles?

Back

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

Front

Identify the relationship between angle pairs ∠1 and ∠5 if they are alternate exterior angles.

Back

If ∠1 and ∠5 are alternate exterior angles, then they are equal in measure.

Front

If angle 1 measures 27°, what is the measure of angle 4 if they are corresponding angles?

Back

Angle 4 also measures 27° because corresponding angles are equal.

Front

What is the sum of the interior angles of a triangle?

Back

The sum of the interior angles of a triangle is always 180°.

Front

Define vertical angles.

Back

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

Front

If angle 3 measures 45°, what is the measure of its vertical angle?

Back

The vertical angle also measures 45°.

Front

What is the measure of angle C if it is supplementary to angle 1, which measures 64°?

Back

Angle C measures 116° because supplementary angles sum to 180°.

Front

What are complementary angles?

Back

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

Front

If angle A is 45°, what is the measure of its complement?

Back

The complement of angle A is 45° because 90° - 45° = 45°.

Front

What is the relationship between interior angles on the same side of a transversal?

Back

Interior angles on the same side of a transversal are supplementary when the lines are parallel.