Vertical, Complementary, Supplementary, and Adjacent Angles

If two angles are vertical, what can we say about their measures?

• They are equal.

• They are supplementary.

• They are complementary.

• They are adjacent.

If one angle is 70°, what is its complementary angle?

• 10°

• 20°

• 30°

• 40°

What is the relationship between vertical angles?

• Vertical angles are equal in measure.

• Vertical angles are supplementary.

• Vertical angles are complementary.

• Vertical angles are always acute.

What are complementary angles?

• Two angles that add up to 90 degrees.

• Two angles that add up to 180 degrees.

• Two angles that are equal in measure.

• Two angles that are adjacent to each other.

If two angles are complementary, and one angle measures 30°, what is the other angle?

• 45°

• 60°

• 75°

• 90°

If angle A is 30° and angle B is 150°, are they complementary or supplementary?

• Complementary

• Supplementary

• Neither

• Both

What are supplementary angles?

• Two angles that add up to 90 degrees.

• Two angles that add up to 180 degrees.

• Two angles that are equal in measure.

• Two angles that are adjacent to each other.

What is an example of adjacent angles?

• Two angles that share a side, like angle A and angle B that share side AB.

• Two angles that are opposite each other, like angle A and angle C.

• Two angles that add up to 90 degrees, like angle A and angle B.

• Two angles that are formed by intersecting lines, like angle A and angle D.

What are vertical angles?

• Angles that are adjacent to each other when two lines intersect; they are always equal.

• Angles that are opposite each other when two lines intersect; they are always equal.

• Angles that are supplementary when two lines intersect; they are always equal.

• Angles that are complementary when two lines intersect; they are always equal.

What are adjacent angles?

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

• Angles that are opposite each other when two lines cross.

• Angles that add up to 90 degrees.

• Angles that are equal in measure.