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| a variable in a functional relation whose value determines the value or values of other variables, such as x in the relation y = 3x |
| the property of magnitude involving comparability with other magnitudes, size, volume, area, or length |
| plane geometry | |
| —n | |
| the study of the properties of and relationships between plane curves, figures, etc | |
| plane geometry
The mathematical study of geometric figures whose parts lie in the same plane, such as polygons, circles, and lines. |
The study of two-dimensional figures (figures that are confined to a plane).
Note: Plane geometry is one of the oldest branches of mathematics.
Note: The Greek mathematician Euclid was the first to study plane geometry carefully. His book Elements was the standard plane geometry textbook for centuries.