Complementary, Supplementary, Vertical, Adjacent Angles

What are adjacent angles?

• Two angles that share a common side and a common vertex but do not overlap.

• Two angles that are opposite each other when two lines intersect.

• Two angles that add up to 90 degrees.

• Two angles that are formed by two parallel lines.

What are supplementary angles?

• Two angles whose measures add up to 90 degrees.

• Two angles whose measures add up to 180 degrees.

• Two angles that are adjacent to each other.

• Two angles that are equal in measure.

What is the relationship between supplementary angles?

• The sum of their measures is 90 degrees.

• The sum of their measures is 180 degrees.

• They are always equal in measure.

• They are adjacent angles that form a straight line.

If angle I measures 150 degrees, what type of angle is it?

• It is an acute angle.

• It is an obtuse angle.

• It is a supplementary angle because it can pair with a 30-degree angle to sum to 180 degrees.

• It is a reflex angle.

If two angles are adjacent and one measures 30 degrees, what can you say about the other angle if they are complementary?

• 30 degrees

• 45 degrees

• 60 degrees

• 90 degrees

What is the sum of the measures of two complementary angles?

• 45 degrees

• 90 degrees

• 180 degrees

• 360 degrees

If angle C and angle D are adjacent angles and angle C measures 70 degrees, what is the measure of angle D if they are supplementary?

• 90 degrees

• 100 degrees

• 110 degrees

• 120 degrees

If angle B measures 120 degrees, what is the measure of its supplementary angle?

• 30 degrees

• 60 degrees

• 90 degrees

• 150 degrees

If angle G measures y degrees and is supplementary to angle H, what is the measure of angle H?

• (180 - y) degrees.

• (90 - y) degrees.

• (y + 90) degrees.

• (y - 180) degrees.

If angle A measures 30 degrees, what is the measure of its complementary angle?

• 30 degrees

• 45 degrees

• 60 degrees

• 90 degrees