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A definition is a statement that is used to determine meaning of a new term. In mathematics, definitions describe a condition which unambiguously qualifies what a mathematical term is and are therefore generally used to characterize a concept. Definitions can be explained using undefined terms and other definitions.
| Example Definitions | ||
|---|---|---|
| Right Angle | Parallelogram | Circle |
| An angle whose measure is 90^(∘) or π2 radians. | A quadrilateral with two pairs of parallel sides. | A shape that consists of all the points in a plane that are equidistant from a given point. |
Definitions and axioms form the basis of mathematics. For example, they are used to construct theorems and corollaries.