IM2 Topic 12 (Lesson 1)

Front

What is a corresponding angle?

Back

A corresponding angle is an angle that is in the same relative position at each intersection where a straight line crosses two others.

Front

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

Back

The corresponding angles are equal.

Front

What is the measure of angle HJK if it is given as 142°?

Back

m∠HJK = 142°.

Front

How do you find the measure of an angle when two angles are supplementary?

Back

Two angles are supplementary if their measures add up to 180°. If one angle is known, subtract it from 180° to find the other.

Front

What is the sum of the interior angles of a triangle?

Back

The sum of the interior angles of a triangle is always 180°.

Front

If angle ABC measures 118°, what is the measure of its supplementary angle?

Back

The supplementary angle measures 62° (180° - 118°).

Front

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

Back

Alternate interior angles are equal.

Front

If angle RST measures 138°, what is the measure of its vertical angle?

Back

Vertical angles are equal, so m∠RST = m∠XYZ = 138°.

Front

What is the measure of angle 2 if angle 7 measures 126° and lines p and q are parallel?

Back

m∠2 = 54° (since angle 2 is supplementary to angle 7).

Front

Define supplementary angles.

Back

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