Protractor Practice
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Practice measuring with a protractor. Adjust the angle manually or click the button to generate a random angle for practice. Choose from a 180° or 360° protractor. Switch between the inside and outside angles.
Contributed by: Abby Brown (March 2011)
Suggested by: Victor Fan
Open content licensed under CC BY-NC-SA
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"Protractor Practice"
http://demonstrations.wolfram.com/ProtractorPractice/
Wolfram Demonstrations Project
Published: March 7 2011