Vertical & Adjacent Angles

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

What are adjacent angles?

Back

Adjacent angles are two angles that share a common side and a common vertex but do not overlap.

Front

What does it mean for angles to be supplementary?

Back

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

Front

If angle 5 is 60 degrees, what is the measure of angle 1 if it is adjacent and supplementary to angle 5?

Back

Angle 1 is 120 degrees.

Front

What is the relationship between vertical angles?

Back

Vertical angles are equal; if one angle measures 50 degrees, the other measures 50 degrees.

Front

Identify a pair of adjacent angles from the following: ∠COB & ∠DOA, ∠AOD & ∠AOC.

Back

∠AOD & ∠AOC are adjacent angles.

Front

If angle 2 measures 40 degrees, what is the measure of the angle that is vertical to it?

Back

The angle that is vertical to angle 2 also measures 40 degrees.

Front

What is the sum of two supplementary angles?

Back

The sum of two supplementary angles is always 180 degrees.

Front

Which angles are vertical to each other in the following: ∠COB & ∠AOD?

Back

∠COB & ∠AOD are not vertical angles; they are not opposite each other.

Front

If angle 3 is 30 degrees, what is the measure of angle 4 if it is adjacent to angle 3 and supplementary?

Back

Angle 4 is 150 degrees.