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Protractor

usgb/prəˈtræktər,prəʊˈtræktər/Volume
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Math Instrument

A protractor is specifically used in mathematics or drawing to work with angles.

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We used a protractor in geometry class to draw precise angles.
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Semi-Circle Shape

Protractors are commonly semi-circular but can be full circles, called 360-degree protractors.

Illustration for Semi-Circle Shape
For a full rotation, we needed a 360-degree protractor.
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Measurement Unit

Protractors measure angles in degrees, a unit for measuring the size of an angle.

Illustration for Measurement Unit
The protractor showed that the angle was 45 degrees.
Visual representation of the word "Protractor"

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