IM2 Topic 12 (Lesson 1)

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 two parallel lines are cut by a transversal, what can be said about the alternate interior angles?

Back

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

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 measure of a right angle?

Back

A right angle measures 90 degrees.

Front

If m∠ABC = 118°, what is the measure of its supplementary angle?

Back

The supplementary angle is 62° because supplementary angles sum to 180°.

Front

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

Back

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

Front

How do you find the measure of an exterior angle of a triangle?

Back

The measure of an exterior angle is equal to the sum of the measures of the two non-adjacent interior angles.

Front

What is the measure of an angle that is complementary to a 38° angle?

Back

The complementary angle measures 52° because complementary angles sum to 90°.

Front

If ∠7 = 126°, what is the measure of ∠2 if lines p and q are parallel?

Back

∠2 measures 54° because it is an interior angle on the same side of the transversal.

Front

What is the definition of supplementary angles?

Back

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