Acute, Right, and Obtuse Angles

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

How can you identify an acute angle visually?

Back

An acute angle appears sharp and is smaller than a right angle.

Tags

CCSS.4.G.A.1

Front

How can you identify a right angle visually?

Back

A right angle is often represented by a square corner, indicating a 90-degree angle.

Tags

CCSS.4.G.A.1

Front

How can you identify an obtuse angle visually?

Back

An obtuse angle appears wider than a right angle and is larger than 90 degrees.

Tags

CCSS.4.G.A.1

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

What type of angle is formed by the hands of a clock at 3:00?

Back

A right angle is formed by the hands of a clock at 3:00.

Tags

CCSS.4.G.A.1

Front

What type of angle is formed by the hands of a clock at 2:00?

Back

An obtuse angle is formed by the hands of a clock at 2:00.

Tags

CCSS.4.G.A.1

Front

What type of angle is formed by the hands of a clock at 1:00?

Back

An acute angle is formed by the hands of a clock at 1:00.

Tags

CCSS.4.G.A.1