Types of Angles

Front

What is an acute angle?

Back

An acute angle is an angle that measures greater than 0 degrees and less than 90 degrees.

Front

What is a right angle?

Back

A right angle is an angle that measures exactly 90 degrees.

Front

What is an obtuse angle?

Back

An obtuse angle is an angle that measures greater than 90 degrees but less than 180 degrees.

Front

What type of angle is formed by the corners of a standard road sign?

Back

The corners of a standard road sign typically form acute angles.

Front

How many degrees are in a straight angle?

Back

A straight angle measures exactly 180 degrees.

Front

What is the sum of angles in a triangle?

Back

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

Front

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

Back

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

Front

What is the relationship between acute angles and right angles?

Back

Acute angles are always less than right angles, which measure exactly 90 degrees.

Front

Can an angle be both acute and obtuse?

Back

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

Front

What is a reflex angle?

Back

A reflex angle is an angle that measures greater than 180 degrees but less than 360 degrees.