Incidence geometry

In geometry, collinearity of a set of points is the property of their lying on a single line. A set of points with this property is said to be collinear (sometimes spelled as colinear). In greater generality, the term has been used for aligned objects, that is, things being "in a line" or "in a row".

construct circles that are tangent to three given circles in a plane

geometric concept of a 2D space with a "point at infinity" adjoined

theorem calculating the number of intersection points of two algebraic curves in terms of their degrees

a set of points that lie on a single circle

finite projective plane of order 2

the mathematical study of incidence structures

an abstract mathematical object generalizing the properties of points and lines in the Euclidean plane

incidence geometry theorem

non-desarguesian plane geometry

algebraic partially ordered set or poset which captures the combinatorial properties of a traditional polytope, but not any purely geometric properties such as angles, edge lengths, etc

sequence of faces of a polytope

type of incidence structure in mathematics

particular kind of plane geometry, built upon some affine planes by adding one point

generalised concept of incidence structure of polygons

a set of orthonormal bases, where each vector of a given basis has the same overlap with all the vectors of other bases

basic structure in incidence geometry