Angle Relationships

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 corresponding angles?

Back

Corresponding angles are the angles that are in the same position 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 the pairs of angles on opposite sides of the transversal but inside the two lines. They are equal when the lines are parallel.

Front

What is the measure of angle 1 if angle 2 is 64 degrees and they are corresponding angles?

Back

Angle 1 is also 64 degrees because corresponding angles are equal.

Front

What is the measure of angle 4 if angle 3 is 111 degrees and they are alternate interior angles?

Back

Angle 4 is also 111 degrees because alternate interior angles are equal.

Front

If two parallel lines are cut by a transversal, what can be said about the sum of the interior angles on the same side of the transversal?

Back

The sum of the interior angles on the same side of the transversal is 180 degrees.

Front

What is the relationship between angle 6 and angle 8 if they are alternate exterior angles?

Back

Angle 6 and angle 8 are equal when the lines are parallel.

Front

If angle 5 is 75 degrees, what is the measure of angle 7 if they are vertical angles?

Back

Angle 7 is also 75 degrees because vertical angles are equal.

Front

What is the definition of a transversal?

Back

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

Front

If angle 2 is 50 degrees, what is the measure of angle 6 if they are corresponding angles?

Back

Angle 6 is also 50 degrees because corresponding angles are equal.