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Protractors - National Museum of American History Protractors are mathematical drawing instruments used to draw and to measure angles Americans typically encounter them in elementary or middle school, when they are learning to produce reasonably accurate geometrical figures in order to explore mathematical relationships between those figures
What is a Protractor? Definition, How to Use, Draw, Examples A protractor is a semicircular geometry tool divided into 180 equal parts, each measuring 1° It is used for drawing angles of known measures and finding angles of unknown measures and is usually made of transparent plastic, glass, steel, or wood
Protractor in Math - Definition, How to Use a Protractor, FAQs A protractor is a simple measuring instrument that is used to measure angles A common protractor is in the shape of a semicircle with an inner and outer scale with markings from 0° to 180° on it Learn how to use a protractor, understand its uses and applications Examples and Questions
What is a protractor used for in technical drawing? A protractor is a translucent plastic tool that allows you to measure angles They’re usually semicircular, but they’re also available in a 360° full circle version
Protractor | Angle, Geometry, Drawing | Britannica protractor, any of a group of instruments used to construct and measure plane angles The simplest protractor comprises a semicircular disk graduated in degrees—from 0° to 180° It is an ancient device that was already in use during the 13th century
Protractor | Definition Meaning - The Story of Mathematics A protractor is an easy measuring tool that is utilized to gauge angles A typical protractor is in the form of a semicircle with an internal scale and an external scale and with graduations marked from 0° to 180° on it Designers utilize a more accurate protractor called an arc protractor instrument which gives more accurate readings
Using a Protractor - The Math Doctors Why is a compass called a compass when it protracts and retracts, and why is a protractor called a protractor when it is used to measure degrees? I know this is not really a high school math question, but it intrigues me a great deal
Types of Protractors: Types, Application, and Advantages Among the tools available to measure an angle, a protractor (or engineering protractor) is a simple mathematical and geometrical instrument used for drawing, measuring, and plotting angles
Protractors - Smithsonian Institution Protractors are mathematical drawing instruments used to draw and to measure angles Americans typically encounter them in elementary or middle school, when they are learning to produce reasonably accurate geometrical figures in order to explore mathematical relationships between those figures