Topic: Big Protractor
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Answers to Common Questions
How do you know when to use the big or small numbers on protracto...
When the angle you are measuring is obviously an obtuse angle (angle above 90 degrees, or when you draw a box in the angle and it turns out bigger than it's supposed to) you use the big numbers. When the angle is obviously acute (opposite d... Read More »
Source: http://wiki.answers.com/Q/How_do_you_know_when_to_use_the_big_or_...
