Angles 4th Grade

Front

What is an angle?

Back

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

Front

What is the vertex of an angle?

Back

The vertex is the point where the two rays of an angle meet.

Front

What are the three types of angles based on their measures?

Back

1. Acute angle: less than 90 degrees. 2. Right angle: exactly 90 degrees. 3. Obtuse angle: 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 measures exactly 180 degrees.

Tags

CCSS.4.G.A.1

Front

What is the measure of an acute angle?

Back

An acute angle measures less than 90 degrees.

Tags

CCSS.4.G.A.1

Front

What is the measure of a right angle?

Back

A right angle measures exactly 90 degrees.

Tags

CCSS.4.G.A.1

Front

What is the measure of an obtuse angle?

Back

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

Tags

CCSS.4.G.A.1

Front

What is a full rotation in degrees?

Back

A full rotation is 360 degrees.

Tags

CCSS.4.MD.C.5B

CCSS.HSG.CO.A.1

Front

If an angle measures 165 degrees, what type of angle is it?

Back

It is an obtuse angle.

Tags

CCSS.4.G.A.1

Front

If an angle measures 54 degrees, what type of angle is it?

Back

It is an acute angle.

Tags

CCSS.4.G.A.1