11/12 - FLASHCARD - ANGLE RELATIONSHIPS

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

What is the relationship between parallel lines and a transversal?

Back

When a transversal intersects two parallel lines, it creates several pairs of angles, including corresponding angles, alternate interior angles, and alternate exterior angles.

Front

How do you find the measure of an angle when given its vertical angle?

Back

Vertical angles are equal, so if you know the measure of one vertical angle, the measure of the other is the same.

Front

What is the measure of complementary angles?

Back

Complementary angles are two angles whose measures add up to 90 degrees.

Front

What is the measure of supplementary angles?

Back

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

Front

If angle 4 is 37 degrees, what is the measure of angle 3 if they are supplementary?

Back

Angle 3 would measure 143 degrees, since 180 - 37 = 143.

Front

What is the measure of angle 5 if angle 8 is 23 degrees and they are supplementary?

Back

Angle 5 would measure 157 degrees, since 180 - 23 = 157.

Front

How do you identify corresponding angles when two parallel lines are cut by a transversal?

Back

Corresponding angles are located in the same position at each intersection of the transversal with the parallel lines.

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

What is the definition of alternate interior angles?

Back

Alternate interior angles are pairs of angles that lie between two parallel lines and on opposite sides of the transversal.