Obtuse, right, and acute angles

Front

What is an angle?

Back

An angle is formed when two lines meet at a point called the vertex.

Tags

CCSS.HSG.CO.A.1

Front

What type of angle is less than 90 degrees?

Back

An acute angle.

Tags

CCSS.4.G.A.1

Front

What type of angle is exactly 90 degrees?

Back

A right angle.

Tags

CCSS.4.G.A.1

Front

What type of angle is greater than 90 degrees but less than 180 degrees?

Back

An obtuse angle.

Tags

CCSS.4.G.A.1

Front

What is the measurement of a right angle?

Back

90 degrees.

Tags

CCSS.4.G.A.1

Front

What is the measurement of an acute angle?

Back

Less than 90 degrees.

Tags

CCSS.4.G.A.1

Front

What is the measurement of an obtuse angle?

Back

Greater than 90 degrees and less than 180 degrees.

Tags

CCSS.4.G.A.1

Front

If an angle measures 120 degrees, what type of angle is it?

Back

Obtuse angle.

Tags

CCSS.4.G.A.1

Front

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

Back

Acute angle.

Tags

CCSS.4.G.A.1

Front

If an angle measures 90 degrees, what type of angle is it?

Back

Right angle.

Tags

CCSS.4.G.A.1