self-intersecting line
1Montclair-Boonton Line —   Montclair Boonton Line …
2Polygon — For other uses, see Polygon (disambiguation). Some polygons of different kinds In geometry a polygon (   …
3Space-filling curve — 3 iterations of a Peano curve construction, whose limit is a space filling curve. In mathematical analysis, a space filling curve is a curve whose range contains the entire 2 dimensional unit square (or more generally an N dimensional hypercube) …
4Meander (mathematics) — In mathematics, a meander or closed meander is a self avoiding closed curve which intersects a line a number of times. Intuitively, a meander can be viewed as a road crossing a river through a number of bridges. Contents 1 Meander 1.1 Examples… …
5Cross-cap — In mathematics, a cross cap is a two dimensional surface that is a model of a Möbius strip with a single self intersection. This self intersection precludes the cross cap from being topologically equivalent (i.e., homeomorphic) to a Möbius strip …
6Quadrilateral — This article is about four sided mathematical shapes. For other uses, see Quadrilateral (disambiguation). Quadrilateral Six different types of quadrilaterals Edges and vertices 4 …
7combinatorics — /keuhm buy neuh tawr iks, tor , kom beuh /, n. (used with singular v.) See combinatorial analysis. * * * Branch of mathematics concerned with the selection, arrangement, and combination of objects chosen from a finite set. The number of possible… …
8Curve orientation — In mathematics, a positively oriented curve is a planar simple closed curve (that is, a curve in the plane whose starting point is also the end point and which has no other self intersections) such that when traveling on it one always has the… …
9Roman surface — The Roman surface (so called because Jakob Steiner was in Rome when he thought of it) is a self intersecting mapping of the real projective plane into three dimensional space, with an unusually high degree of symmetry. The mapping is not an… …
10Fourth dimension — [ tesseract rotating around a plane in 4D.] In physics and mathematics, a sequence of n numbers can be understood as a location in an n dimensional space. When n =4, the set of all such locations is called 4 dimensional space, or, colloquially,… …
