Week 13 (PT): Angle Relationships & Parallel Lines

Front

What are corresponding angles?

Back

Corresponding angles are pairs of angles that are in similar positions at each intersection where a straight line crosses two others. When the lines are parallel, corresponding angles are equal.

Front

What are alternate interior angles?

Back

Alternate interior angles are pairs of angles that lie between two lines and on opposite sides of a transversal. When the lines are parallel, alternate interior angles are equal.

Front

What are consecutive interior angles?

Back

Consecutive interior angles are pairs of angles that lie on the same side of the transversal and between the two lines. When the lines are parallel, consecutive interior angles are supplementary (add up to 180 degrees).

Front

What is the sum of angles in a triangle?

Back

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

Front

How do you find the measure of an exterior angle of a triangle?

Back

The measure of an exterior angle of a triangle is equal to the sum of the measures of the two opposite interior angles.

Front

What is the relationship between vertical angles?

Back

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

Front

What is the definition of parallel lines?

Back

Parallel lines are lines in a plane that never meet and are always the same distance apart.

Front

What is a transversal?

Back

A transversal is a line that crosses at least two other lines in the same plane.

Front

If two parallel lines are cut by a transversal, what can be said about the corresponding angles?

Back

If two parallel lines are cut by a transversal, the corresponding angles are equal.

Front

If angle A is 22 degrees, what is the measure of its corresponding angle when lines are parallel?

Back

The measure of the corresponding angle is also 22 degrees.