Angle Relationships

Front

What are complementary angles?

Back

Complementary angles are two angles whose measures add up to 90 degrees.

Tags

CCSS.7.G.B.5

Front

What are supplementary angles?

Back

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

Tags

CCSS.7.G.B.5

Front

What are vertical angles?

Back

Vertical angles are the angles opposite each other when two lines intersect. They are always congruent (equal in measure).

Tags

CCSS.7.G.B.5

Front

What are adjacent angles?

Back

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

Tags

CCSS.7.G.B.5

Front

What is a linear pair of angles?

Back

A linear pair of angles consists of two adjacent angles that form a straight line, adding up to 180 degrees.

Tags

CCSS.7.G.B.5

Front

What is the sum of angles in a triangle?

Back

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

Tags

CCSS.8.G.A.5

Front

If two angles are supplementary and one angle measures 70 degrees, what is the measure of the other angle?

Back

The other angle measures 110 degrees (180 - 70 = 110).

Tags

CCSS.7.G.B.5

Front

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

Back

The other angle measures 60 degrees (90 - 30 = 60).

Tags

CCSS.7.G.B.5

Front

What is the relationship between vertical angles?

Back

Vertical angles are always congruent (they have equal measures).

Tags

CCSS.7.G.B.5

Front

If angle A and angle B are a linear pair and angle A measures 40 degrees, what is the measure of angle B?

Back

Angle B measures 140 degrees (180 - 40 = 140).

Tags

CCSS.7.G.B.5