Geometry - Flashcard - Special Angles on Parallel Lines

Front

The Triangle Sum Theorem states that the sum of all angles in a triangle is ______.

Back

180°

Front

What is the vertical angle to angle 4 when two parallel lines are cut by a transversal?

Back

Angle 7

Front

Which pair of angles is an example of alternate exterior angles?

Back

∠1 and ∠8

Front

Find the missing angle. Find x.

Back

20°

Front

Which are pairs of vertical angles?

Back

∠COB & ∠AOD

Front

What are vertical angles?

Back

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

Front

Define alternate interior angles.

Back

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

Front

What is the definition of 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.

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°.

Front

What is the relationship between alternate exterior angles when two parallel lines are cut by a transversal?

Back

Alternate exterior angles are equal.