Obtuse, right, and acute angles

Front

What is an obtuse angle?

Back

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

Front

What is a right angle?

Back

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

Front

What is an acute angle?

Back

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

Front

What is the range of degrees for an obtuse angle?

Back

The range of degrees for an obtuse angle is between 90 and 180 degrees.

Front

What is the range of degrees for an acute angle?

Back

The range of degrees for an acute angle is between 0 and 90 degrees.

Front

How can you identify a right angle visually?

Back

A right angle can be identified visually by the presence of a square corner or a 90-degree mark.

Front

What is the sum of angles in a triangle?

Back

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

Front

If one angle in a triangle is obtuse, what can be said about the other two angles?

Back

If one angle in a triangle is obtuse, the other two angles must be acute.

Front

Can a triangle have more than one obtuse angle?

Back

No, a triangle cannot have more than one obtuse angle because the sum of the angles must equal 180 degrees.

Front

What type of angle is 35 degrees?

Back

35 degrees is an acute angle.