Acute and obtuse angles (1)

An acute angle is greater than zero degrees and less than 90 degrees. An obtuse angle is greater than 90 degrees but less than 180 degrees.

Related Resources

In one hour the hour hand of a clock turns 30 degrees. Knowing this means that the questions on these pages are quite straightforward.

A set square is a very useful tool for drawing 30, 45, 60 and 90 degree angles.

Finding the largest or smallest angle in a shape or on a straight line.

Recognising acute, obtuse and right angles.

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