Angles from Parallel Lines & Transversal

Front

What are supplementary angles?

Back

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

Front

Which angles are considered vertical angles?

Back

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

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. They are equal when the lines are parallel.

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. They are equal when the lines are parallel.

Front

What are alternate exterior angles?

Back

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

Front

What is the sum of the angles in a triangle?

Back

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

Front

If two angles are complementary, what is the sum of their measures?

Back

The sum of two complementary angles is 90 degrees.

Front

What is the relationship between angles formed by a transversal crossing parallel lines?

Back

When a transversal crosses parallel lines, several pairs of angles are formed, including corresponding angles, alternate interior angles, and alternate exterior angles, which are all equal.

Front

How do you find the value of x in angle equations?

Back

To find the value of x in angle equations, set up an equation based on the relationships between the angles (e.g., supplementary, complementary) and solve for x.

Front

What is the definition of a transversal?

Back

A transversal is a line that intersects two or more lines at different points.