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Mathematics
Of or pertaining to the study of the measurement, properties, and relationships of quantities and sets, using numbers and symbols.
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Mathematics > Geometry 
counterexample
Mathematics; Geometry
An example used to prove that an if-then statement is false. For that counterexample, the hypothesis is true and the conclusion is false.
cube
Mathematics; Geometry
A three dimensional solid object bounded by six square faces, facets, or sides, which are all of the same size.
deductive reasoning
Mathematics; Geometry
Proving statements by reasoning from accepted postulates, definitions, theorems, and given information.
diameter
Mathematics; Geometry
A chord that contains the center of a circle. It passes through the center of a circle.
distance from a point to a line (or plane)
Mathematics; Geometry
The length of the perpendicular segment from the point to the line (or plane).
exterior angle of a triangle
Mathematics; Geometry
The angle formed when one side of the triangle is extended.
Sub-categories
- Algebra (7603)
- Analysis (88)
- Calculus (3452)
- Cryptography (47)
- General mathematics (91)
- Geometry (11000)
- Measurements (847)
- Number theory (1128)
- Theorem (241)
- Trigonometry (598)