Vertical Angle, Lines and Angle Flashcard

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

Define alternate interior angles.

Back

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

Front

What is the sum of angles on a straight line?

Back

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

Front

What is the sum of angles around a point?

Back

The sum of angles around a point is 360 degrees.

Front

If two angles are complementary, what is their sum?

Back

The sum of two complementary angles is 90 degrees.

Front

If two angles are supplementary, what is their sum?

Back

The sum of two supplementary angles is 180 degrees.

Front

What is the relationship between vertical angles?

Back

Vertical angles are always equal to each other.

Front

How do you find the measure of an unknown angle when given one angle?

Back

To find the measure of an unknown angle, use the relationships of complementary or supplementary angles, depending on the situation.

Front

What is a transversal?

Back

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