Synonyms and antonyms of Instruments used in mathematics and geometry in American Thesaurus

compasses (noun)

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

dividers (noun)

a piece of equipment used for measuring or drawing lines and angles, consisting of two pieces of metal with pointed ends that are joined together at the top

plumb line (noun)

a piece of string with a metal object attached to the bottom, used for checking whether a wall is straight or for measuring the depth of water

protractor (noun)

an object that is shaped like half a circle and is used for measuring and drawing angles

ruler (noun)

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

set square (noun)

British a triangle for drawing lines and measuring angles

slide rule (noun)

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

theodolite (noun)

a piece of equipment that a surveyor uses for measuring angles

triangle (noun)

American a small object with three sides and one angle that is 90°, used for drawing straight lines, triangles, and right angles

T-square (noun)

a 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 plans for buildings, etc.