Etymology
Meaning
A protractor is a measuring device used to measure and construct angles. It is typically made of transparent plastic or metal in the shape of a semicircle or full circle. It has markings in degrees and can be used to determine the angle between two lines or to construct angles of specific measures.
Origin
The protractor was first developed by the ancient Greeks around the 5th century BC. The earliest known protractors were made of bronze or wood and had markings in degrees. They were used by mathematicians, astronomers, and architects to measure and construct angles.
Over time, the design of the protractor has evolved, but its function has remained the same. Today, protractors are used in a variety of applications, including math, science, engineering, architecture, and construction.
Etymology Latin pro forward trahere to draw Meaning and Origin Protracti
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