Week 6 Flashcard - Angles, Parallel Lines & a Transversal

Front

What are alternate interior angles?

Back

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

Front

What are vertical angles?

Back

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

Front

What are adjacent angles?

Back

Adjacent angles are two angles that share a common side and a common vertex but do not overlap.

Front

What are corresponding angles?

Back

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

Front

How do you identify 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

What is the relationship between consecutive interior angles?

Back

Consecutive interior angles are pairs of angles that are on the same side of the transversal and inside the two lines. They are supplementary when the lines are parallel.

Front

What is a transversal?

Back

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

Front

How can you determine if two lines are parallel using angles?

Back

If a transversal intersects two lines and the corresponding angles are equal, or if the alternate interior angles are equal, then the lines are parallel.

Front

What is the sum of the angles on a straight line?

Back

The sum of the angles on a straight line is 180 degrees.

Front

What is the sum of the angles in a triangle?

Back

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