Angle Relationship (Missing 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 is the sum of complementary angles?

Back

The sum of complementary angles is 90 degrees.

Front

What is the sum of supplementary angles?

Back

The sum of supplementary angles is 180 degrees.

Front

If two angles are adjacent, what does that mean?

Back

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

Front

Find the missing angle if one angle is 50 degrees and they are complementary.

Back

The missing angle is 40 degrees.

Front

Find the missing angle if one angle is 130 degrees and they are supplementary.

Back

The missing angle is 50 degrees.

Front

What are adjacent angles?

Back

Adjacent angles are angles that are next to each other and share a common vertex and side.

Front

If ∠1 and ∠2 are vertical angles, and ∠1 = 65 degrees, what is ∠2?

Back

∠2 = 65 degrees.

Front

What is the relationship between angles that are supplementary?

Back

Supplementary angles add up to 180 degrees.

Front

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

Back

The other angle is 60 degrees.