What is Protractor?
[[Image:Grad protractor.png|thumb|200px|A 400-graduated protractor]] [[Image:Protractor katomierz.jpg|thumb|200px|A 360-degree protractor]] The '''protractor''' is a [[tool]] used to measure [[angle]]s. It usually has marks with labels of the [[Degree (angle)|degrees]]. Protractors are usually half circles or full circles. {{Commons|Category:Protractors}} {{math-stub}} [[Category:Geometry]] [[Category:Measuring tools]] [[Category:Mathematical tools]]