Year 5 angles

Front

What is an acute angle?

Back

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

Front

What is a straight angle?

Back

A straight angle is an angle that measures exactly 180 degrees.

Front

What is a reflex angle?

Back

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

Front

What is the sum of all angles in a triangle?

Back

The sum of all three angles of any triangle is exactly 180 degrees.

Front

What shape is formed by 360 degrees?

Back

A circle is formed by 360 degrees.

Front

How do you classify the angle made by the jaws of an alligator?

Back

The angle made by the jaws of an alligator is an acute angle.

Front

How do you classify the angle made by the big hands of a clock at 3 o'clock?

Back

The angle made by the big hands of a clock at 3 o'clock is a right angle.

Front

How do you classify the angle shown below the stairs?

Back

The angle shown below the stairs is a reflex angle.