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

Define 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 supplementary angles?

Back

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

Front

What is the relationship between alternate interior angles?

Back

Alternate interior angles are equal when two parallel lines are cut by a transversal.

Front

What are alternate exterior angles?

Back

Alternate exterior angles are equal when two parallel lines are cut by a transversal.

Front

If angle 1 is 70 degrees, what is the measure of angle 3 if they are corresponding angles?

Back

Angle 3 is also 70 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

If angle 5 and angle 6 are supplementary and angle 5 is 110 degrees, what is angle 6?

Back

Angle 6 is 70 degrees.

Front

Identify the angle relationship: Angle 2 and Angle 6 are equal when two parallel lines are cut by a transversal.

Back

These are alternate interior angles.

Front

What is the measure of angle 4 if angle 4 and angle 5 are supplementary and angle 5 is 90 degrees?

Back

Angle 4 is 90 degrees.