Classify Angles

Front

What is an acute angle?

Back

An angle that measures less than 90 degrees.

Tags

CCSS.4.G.A.1

Front

What is an obtuse angle?

Back

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

Tags

CCSS.4.G.A.1

Front

What is a right angle?

Back

An angle that measures exactly 90 degrees.

Tags

CCSS.4.G.A.1

Front

What is the measure of a straight angle?

Back

180 degrees.

Tags

CCSS.4.MD.C.5B

CCSS.HSG.CO.A.1

Front

How do you classify an angle that measures exactly 90 degrees?

Back

It is called a right angle.

Tags

CCSS.4.G.A.1

Front

What is the sum of angles in a triangle?

Back

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

Tags

CCSS.8.G.A.5

Front

If one angle in a triangle is 90 degrees, what type of triangle is it?

Back

It is a right triangle.

Tags

CCSS.4.G.A.2

Front

What is the relationship between acute angles and right angles?

Back

Acute angles are smaller than right angles.

Tags

CCSS.4.G.A.1

Front

What is the relationship between obtuse angles and straight angles?

Back

Obtuse angles are smaller than straight angles.

Tags

CCSS.4.G.A.1

Front

If an angle measures 45 degrees, what type of angle is it?

Back

It is an acute angle.

Tags

CCSS.4.G.A.1