52 relations: Analytic geometry, Archimedes, Ball (mathematics), Computer graphics, Cone, Cube, Cuboid, Cylinder, Desargues's theorem, Descriptive geometry, Dihedral angle, Dimension, Dodecahedron, Ellipsoid, Encyclopædia Britannica Eleventh Edition, Euclidean geometry, Euclidean vector, Eudoxus of Cnidus, Frustum, Geometry, Hyperboloid, Icosahedron, Incidence (geometry), Line (geometry), Mathematics, Matrix (mathematics), Measurement, Octahedron, Paraboloid, Parallelepiped, Plane (geometry), Planimetrics, Platonic solid, Platonism, Point (geometry), Polyhedron, Prism (geometry), Projective geometry, Pyramid (geometry), Pythagoreanism, Quadric, Radius, Shape, Solid angle, Sphere, Spheroid, Surface (mathematics), Surface area, System of linear equations, Tetrahedron, ..., Three-dimensional space, Volume. Expand index (2 more) » « Shrink index
In classical mathematics, analytic geometry, also known as coordinate geometry or Cartesian geometry, is the study of geometry using a coordinate system.
Archimedes of Syracuse (Ἀρχιμήδης) was a Greek mathematician, physicist, engineer, inventor, and astronomer.
In mathematics, a ball is the space bounded by a sphere.
Computer graphics are pictures and films created using computers.
A cone is a three-dimensional geometric shape that tapers smoothly from a flat base (frequently, though not necessarily, circular) to a point called the apex or vertex.
In geometry, a cube is a three-dimensional solid object bounded by six square faces, facets or sides, with three meeting at each vertex.
In geometry, a cuboid is a convex polyhedron bounded by six quadrilateral faces, whose polyhedral graph is the same as that of a cube.
A cylinder (from Greek κύλινδρος – kulindros, "roller, tumbler"), has traditionally been a three-dimensional solid, one of the most basic of curvilinear geometric shapes.
In projective geometry, Desargues's theorem, named after Girard Desargues, states: Denote the three vertices of one triangle by and, and those of the other by and.
Descriptive geometry is the branch of geometry which allows the representation of three-dimensional objects in two dimensions, by using a specific set of procedures.
A dihedral angle is the angle between two intersecting planes.
In physics and mathematics, the dimension of a mathematical space (or object) is informally defined as the minimum number of coordinates needed to specify any point within it.
In geometry, a dodecahedron (Greek δωδεκάεδρον, from δώδεκα dōdeka "twelve" + ἕδρα hédra "base", "seat" or "face") is any polyhedron with twelve flat faces.
An ellipsoid is a surface that may be obtained from a sphere by deforming it by means of directional scalings, or more generally, of an affine transformation.
The Encyclopædia Britannica Eleventh Edition (1910–11) is a 29-volume reference work, an edition of the Encyclopædia Britannica.
Euclidean geometry is a mathematical system attributed to Alexandrian Greek mathematician Euclid, which he described in his textbook on geometry: the Elements.
In mathematics, physics, and engineering, a Euclidean vector (sometimes called a geometric or spatial vector, or—as here—simply a vector) is a geometric object that has magnitude (or length) and direction.
Eudoxus of Cnidus (Εὔδοξος ὁ Κνίδιος, Eúdoxos ho Knídios) was an ancient Greek astronomer, mathematician, scholar, and student of Archytas and Plato.
In geometry, a frustum (plural: frusta or frustums) is the portion of a solid (normally a cone or pyramid) that lies between one or two parallel planes cutting it.
Geometry (from the γεωμετρία; geo- "earth", -metron "measurement") is a branch of mathematics concerned with questions of shape, size, relative position of figures, and the properties of space.
In geometry, a hyperboloid of revolution, sometimes called circular hyperboloid, is a surface that may be generated by rotating a hyperbola around one of its principal axes.
In geometry, an icosahedron is a polyhedron with 20 faces.
In geometry, an incidence relation is a binary relation between different types of objects that captures the idea being expressed when phrases such as "a point lies on a line" or "a line is contained in a plane" are used.
The notion of line or straight line was introduced by ancient mathematicians to represent straight objects (i.e., having no curvature) with negligible width and depth.
Mathematics (from Greek μάθημα máthēma, "knowledge, study, learning") is the study of such topics as quantity, structure, space, and change.
In mathematics, a matrix (plural: matrices) is a rectangular array of numbers, symbols, or expressions, arranged in rows and columns.
Measurement is the assignment of a number to a characteristic of an object or event, which can be compared with other objects or events.
In geometry, an octahedron (plural: octahedra) is a polyhedron with eight faces, twelve edges, and six vertices.
In geometry, a paraboloid is a quadric surface that has (exactly) one axis of symmetry and no center of symmetry.
In geometry, a parallelepiped is a three-dimensional figure formed by six parallelograms (the term rhomboid is also sometimes used with this meaning).
In mathematics, a plane is a flat, two-dimensional surface that extends infinitely far.
Planimetrics is the study of plane measurements, including angles, distances, and areas.
In three-dimensional space, a Platonic solid is a regular, convex polyhedron.
Platonism, rendered as a proper noun, is the philosophy of Plato or the name of other philosophical systems considered closely derived from it.
In modern mathematics, a point refers usually to an element of some set called a space.
In geometry, a polyhedron (plural polyhedra or polyhedrons) is a solid in three dimensions with flat polygonal faces, straight edges and sharp corners or vertices.
In geometry, a prism is a polyhedron comprising an n-sided polygonal base, a second base which is a translated copy (rigidly moved without rotation) of the first, and n other faces (necessarily all parallelograms) joining corresponding sides of the two bases.
Projective geometry is a topic in mathematics.
In geometry, a pyramid is a polyhedron formed by connecting a polygonal base and a point, called the apex.
Pythagoreanism originated in the 6th century BC, based on the teachings and beliefs held by Pythagoras and his followers, the Pythagoreans, who were considerably influenced by mathematics and mysticism.
In mathematics, a quadric or quadric surface (quadric hypersurface in higher dimensions), is a generalization of conic sections (ellipses, parabolas, and hyperbolas).
In classical geometry, a radius of a circle or sphere is any of the line segments from its center to its perimeter, and in more modern usage, it is also their length.
A shape is the form of an object or its external boundary, outline, or external surface, as opposed to other properties such as color, texture or material composition.
In geometry, a solid angle (symbol) is a measure of the amount of the field of view from some particular point that a given object covers.
A sphere (from Greek σφαῖρα — sphaira, "globe, ball") is a perfectly round geometrical object in three-dimensional space that is the surface of a completely round ball (viz., analogous to the circular objects in two dimensions, where a "circle" circumscribes its "disk").
A spheroid, or ellipsoid of revolution, is a quadric surface obtained by rotating an ellipse about one of its principal axes; in other words, an ellipsoid with two equal semi-diameters.
In mathematics, a surface is a generalization of a plane which needs not be flat, that is, the curvature is not necessarily zero.
The surface area of a solid object is a measure of the total area that the surface of the object occupies.
In mathematics, a system of linear equations (or linear system) is a collection of two or more linear equations involving the same set of variables.
In geometry, a tetrahedron (plural: tetrahedra or tetrahedrons), also known as a triangular pyramid, is a polyhedron composed of four triangular faces, six straight edges, and four vertex corners.
Three-dimensional space (also: 3-space or, rarely, tri-dimensional space) is a geometric setting in which three values (called parameters) are required to determine the position of an element (i.e., point).
Volume is the quantity of three-dimensional space enclosed by a closed surface, for example, the space that a substance (solid, liquid, gas, or plasma) or shape occupies or contains.
3D geometry, 3d geometry, Geometric solid, Solid (geometry), Solid Geometry, Solid figure, Solid mensuration, Solid object, Stereometry, Three dimensional geometry, Three-dimensional figure, Three-dimensional geometry.