Giải nghĩa:
A tool used to measure angles in degrees
Ví dụ:
Using a protractor, she measured the angles of the triangle.
Cách sử dụng
A protractor is a tool commonly used in mathematics to measure angles. It looks like a half-circle and has markings that show the degrees. You can use a protractor when you have to draw an angle, or when you want to measure the angle of something around you, like a doorway or a corner of a room. Protractors are also used in engineering and construction to create accurate angles for designs and measurements.
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