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 greater than 90 degrees but less than 180 degrees.

Tags

CCSS.4.G.A.1

Front

How can you identify an acute angle in a diagram?

Back

An acute angle can be identified as the angle that is smaller than a right angle, appearing sharp or narrow.

Tags

CCSS.4.G.A.1

Front

What is the range of measurements for an obtuse angle?

Back

An obtuse angle measures between 90 degrees and 180 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

Can an angle be both acute and obtuse?

Back

No, an angle cannot be both acute and obtuse; they are mutually exclusive categories.

Tags

CCSS.4.G.A.1

Front

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

Back

The angle formed is a right angle.

Tags

CCSS.4.G.A.1

Front

What is the complementary angle of a 30-degree angle?

Back

The complementary angle of a 30-degree angle is a 60-degree angle.

Tags

CCSS.7.G.B.5

Front

What is the supplementary angle of a 120-degree angle?

Back

The supplementary angle of a 120-degree angle is a 60-degree angle.

Tags

CCSS.7.G.B.5