INSTRUMENTS USED IN MATHEMATICS

Instruments used in mathematics and geometry - thesaurus


compasses

 nouna piece of equipment used for drawing circles, consisting of two thin parts joined in the shape of the letter V

dividers

 nouna piece of equipment used for measuring or drawinglines and angles, consisting of two pieces of metalwith pointed ends that are joined together at the top

plumb line

 nouna piece of string with a metal object fixed to the bottom, used for checking whether a wall is straightor for measuring the depth of water

protractor

 nounan object that is shaped like half a circle and is usedfor measuring and drawing angles

ruler

 nounan object used for measuring or for drawing straightlines, consisting of a long flat piece of plastic, wood, or metal marked with units of measurement

set square

 nounbritish a flat plastic or metal tool with three straight sides and one right angle, used for drawing lines and measuring angles

slide rule

 nouna simple piece of equipment like a ruler with a piece in the middle that slides along, used for calculating

theodolite

 nouna piece of equipment that a surveyor uses for measuring angles

triangle

 nounmathsamerican a set square

T-square

 nouna tool in the shape of the letter T that can help you to draw lines that are exactly parallel or in the shape of a square. A T-square is used in making detailed plansfor buildings etc.

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NUMBERS

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        A  number  is a  mathematical object  used to  count ,  measure , and also  label . The original examples are the  natural numbers   1 ,  2 ,  3 ,  4 , and so forth. [1]  A notational  symbol  that represents a number is called a  numeral . [2]  In addition to their use in counting and measuring, numerals are often used for labels (as with  telephone numbers ), for ordering (as with  serial numbers ), and for codes (as with  ISBNs ). In common usage,  number  may refer to a symbol, a  word , or a  mathematical abstraction .
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