Using a Protractor

This is a protractor, it helps you measure angles (in degrees):

Protractor

Protractors are fun and easy to use

Have a look at this animation (press the play button) to see how to make a neat angle using a protractor and ruler:


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Measuring

Protractors usually have two sets of numbers going
in opposite directions.

Be careful which one you use!

When in doubt think "should this angle be bigger or
smaller than 90° ?"


Have a Go Yourself!

Try to measure the angles A, B, C and D inside this shape.

Be careful which angle you read from the protractor.

Hint: if you get them all correct, they will add up to 360°

 

The answers are ... no, that would spoil the fun!