Meaning | The pure mathematics of points and lines and curves and surfaces. |
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Category of | circumscribe | To draw a geometric figure around another figure so that the two are in contact but do not intersect |
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congruent | coinciding when superimposed |

conic section, conic | (geometry) a curve generated by the intersection of a plane and a circular cone |

construct | Draw with suitable instruments and under specified conditions |

diagonal | (geometry) a straight line connecting any two vertices of a polygon that are not adjacent |

duality | (geometry) the interchangeability of the roles of points and planes in the theorems of projective geometry |

eccentricity | (geometry) a ratio describing the shape of a conic section |

inclination, angle of inclination | (geometry) the angle formed by the x-axis and a given line (measured counterclockwise from the positive half of the x-axis) |

incongruent | not congruent |

inscribe | Draw within a figure so as to touch in as many places as possible |

lemniscate | Any of several plane algebraic curves in the shape of a figure eight |

normal | forming a right angle |

pencil | A figure formed by a set of straight lines or light rays meeting at a point |

right | Having the axis perpendicular to the base |

section, plane section | (geometry) the area created by a plane cutting through a solid |

square, foursquare | (geometry) a plane rectangle with four equal sides and four right angles |

superposition | (geometry) the placement of one object ideally in the position of another one in order to show that the two coincide |

translate | change the position of (figures or bodies) in space without rotation |

truncate | Replace a corner by a plane |

Category | mathematics, math, maths | A science (or group of related sciences) dealing with the logic / logic of quantity and shape and arrangement |
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Narrower | affine geometry | The geometry of affine transformations |
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analytic geometry, analytical geometry, coordinate geometry | The use of algebra to study geometric properties |

elementary geometry, parabolic geometry, Euclidean geometry | (mathematics) geometry based on Euclid's axioms |

fractal geometry | (mathematics) the geometry of fractals |

non-Euclidean geometry | (mathematics) geometry based on axioms different from Euclid's |

plane geometry | The geometry of 2-dimensional figures |

projective geometry, descriptive geometry | The geometry of properties that remain invariant under projection |

solid geometry | The geometry of 3-dimensional space |

spherical geometry | (mathematics) the geometry of figures on the surface of a sphere |

Broader | pure mathematics | The branches of mathematics that study and develop the principles of mathematics for their own sake rather than for their immediate usefulness |
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Spanish | geometría |
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Catalan | geometria, geometría |
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Adjectives | geometric, geometrical | of or relating to or determined by geometry |
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geometrical | characterized by simple geometric forms in design and decoration |

Nouns | geometrician | a mathematician specializing in geometry |
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