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what is the description of protractor

Sagot :

A protractor is a measuring instrument, typically made of transparent plastic or glass, for measuring angles. Some protractors are simple half-discs. More advanced protractors, such as the bevel protractor, have one or two swinging arms, which can be used to help measure the angle.

A protractor is a measuring instrument , typically made of transparent plastic or glass, for measuring angles. Some protractors are simple half-disc. More advanced protractors, such as the bevel protractors have one or two swinging arms, which can be used to measure the angle