Additive Angles

Front

What is an angle?

Back

An angle is formed by two rays (sides) that share a common endpoint (vertex).

Front

What is the sum of angles in a triangle?

Back

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

Tags

CCSS.8.G.A.5

Front

What is an acute angle?

Back

An acute angle is an angle that measures less than 90 degrees.

Tags

CCSS.4.G.A.1

Front

What is a right angle?

Back

A right angle is an angle that measures exactly 90 degrees.

Tags

CCSS.4.G.A.1

Front

What is an obtuse angle?

Back

An obtuse angle is an angle that measures more than 90 degrees but less than 180 degrees.

Tags

CCSS.4.G.A.1

Front

What is a straight angle?

Back

A straight angle is an angle that measures exactly 180 degrees.

Tags

CCSS.4.G.A.1

Front

How do you find the missing angle in a triangle?

Back

To find the missing angle in a triangle, subtract the sum of the known angles from 180 degrees.

Tags

CCSS.8.G.A.5

Front

If one angle is 50 degrees, what is the other angle if the two angles are complementary?

Back

The other angle is 40 degrees (90 - 50 = 40).

Tags

CCSS.7.G.B.5

Front

If two angles are supplementary and one angle is 104 degrees, what is the other angle?

Back

The other angle is 76 degrees (180 - 104 = 76).

Tags

CCSS.7.G.B.5

Front

What is the relationship between complementary angles?

Back

Complementary angles are two angles whose sum is 90 degrees.

Tags

CCSS.7.G.B.5