Extra Credit Flashcard--Parallel lines and angels

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

If ∠8 is 115 degrees, what is the measure of ∠15 if they are vertical angles?

Back

∠15 is also 115 degrees because vertical angles are equal.

Front

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

Back

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

Front

If two lines are parallel, what can be said about the corresponding angles formed by a transversal?

Back

Corresponding angles are equal when two lines are parallel.

Front

What is a transversal?

Back

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

Front

What are complementary angles?

Back

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

Front

What are adjacent angles?

Back

Adjacent angles are two angles that share a common side and a common vertex.

Front

What is a linear pair of angles?

Back

A linear pair of angles are two adjacent angles that form a straight line, and their measures add up to 180 degrees.

Front

If angle 1 and angle 2 are alternate interior angles and angle 1 measures 37 degrees, what is the measure of angle 2?

Back

Angle 2 also measures 37 degrees because alternate interior angles are equal.

Front

What is the measure of angle 1 if it is a corresponding angle to angle 2 which measures 143 degrees?

Back

Angle 1 also measures 143 degrees because corresponding angles are equal.