computation, the convex hull of a simple polygon, triangulation, and Euclidean shortest paths. Other constructions in geometry related to simple polygons include...
31 KB (3,206 words) - 07:42, 13 March 2025
In geometry, the convex hull, convex envelope or convex closure of a shape is the smallest convex set that contains it. The convex hull may be defined either...
58 KB (7,173 words) - 01:04, 1 July 2025
union of the interior and the boundary of the polygon. In particular, it is a simple polygon (not self-intersecting). Equivalently, a polygon is convex if...
6 KB (881 words) - 09:02, 13 March 2025
geometry, the convex hull of a simple polygon is the polygon of minimum perimeter that contains a given simple polygon. It is a special case of the more general...
9 KB (1,141 words) - 03:36, 2 June 2025
their convex hull is a convex polygon whose vertices are some of the points in the input set. Its most common representation is the list of its vertices...
17 KB (2,326 words) - 04:22, 2 May 2025
A simple polygon that is not convex is called concave, non-convex or reentrant. A concave polygon will always have at least one reflex interior angle—that...
3 KB (337 words) - 07:05, 22 May 2025
computational geometry, polygon triangulation is the partition of a polygonal area (simple polygon) P into a set of triangles, i.e., finding a set of triangles with...
13 KB (1,386 words) - 18:20, 13 April 2025
relative convex hull or geodesic convex hull is an analogue of the convex hull for the points inside a simple polygon or a rectifiable simple closed curve...
9 KB (1,112 words) - 11:33, 27 May 2025
Curve orientation (category Polygons)
forms a simple polygon, the orientation of the resulting polygon is directly related to the sign of the angle at any vertex of the convex hull of the polygon...
9 KB (1,483 words) - 02:31, 8 October 2024
drastic change of the size of the output. Therefore, if the convex hull is required to be reported in traditional way as a polygon, the lower bound for the...
6 KB (769 words) - 22:54, 28 July 2024
endpoints are convex corners. An antiknob is an edge whose two endpoints are concave corners. A rectilinear polygon that is also simple is also called...
11 KB (1,571 words) - 22:36, 30 May 2025
around the convex hull. It is a trivial task when the convex polygon is specified in a traditional way for polygons, i.e., by the ordered sequence of its vertices...
23 KB (3,262 words) - 01:53, 22 May 2025
Polyhedron (redirect from Convex polyhedra)
the space. An ideal polyhedron is the convex hull of a finite set of ideal points. Its faces are ideal polygons, but its edges are defined by entire hyperbolic...
96 KB (10,656 words) - 22:12, 1 July 2025
Alpha shape (category Convex hulls)
a set of points is a generalization of the concept of the convex hull, i.e. every convex hull is an alpha-shape but not every alpha shape is a convex...
6 KB (720 words) - 16:27, 2 March 2025
Triangle (redirect from Medians of a triangle)
A triangle is a polygon with three corners and three sides, one of the basic shapes in geometry. The corners, also called vertices, are zero-dimensional...
55 KB (6,518 words) - 21:25, 19 June 2025
Perimeter (redirect from Perimeter of the polygon)
removes a piece from a figure, its area decreases but its perimeter may not. The convex hull of a figure may be visualized as the shape formed by a rubber...
11 KB (1,305 words) - 20:33, 11 May 2025
Minkowski addition (category Convex geometry)
for convex hulls in physics engines. For two convex polygons P and Q in the plane with m and n vertices, their Minkowski sum is a convex polygon with...
24 KB (2,977 words) - 20:55, 19 June 2025
Examples of convex curves include the convex polygons, the boundaries of convex sets, and the graphs of convex functions. Important subclasses of convex curves...
37 KB (4,174 words) - 06:39, 27 September 2024
e.g. 720° for a pentagram and 0° for an angular "eight". Regular polygon Convex hull Nonzero-rule List of self-intersecting polygons Coxeter, 1974. Rae...
3 KB (393 words) - 21:13, 12 May 2024
Voronoi diagram (redirect from Voronoi polygon)
intersection of all of these n − 1 {\displaystyle n-1} half-spaces, and hence it is a convex polygon. When two cells in the Voronoi diagram share a boundary...
46 KB (5,504 words) - 09:37, 24 June 2025
120-cell (redirect from Compound of 120-cell and 600-cell)
geometries of every convex regular polytope in the first four dimensions (except the polygons {7} and above). As the sixth and largest regular convex 4-polytope...
131 KB (14,824 words) - 19:21, 6 April 2025
always inhabit a single plane. This is not necessarily true of more complex polygons, however. The flat nature of triangles makes it simple to determine...
14 KB (2,028 words) - 16:12, 16 November 2023
Happy ending problem (category Polygons)
a simple case analysis: if four or more points are vertices of the convex hull, any four such points can be chosen. If on the other hand, the convex hull...
18 KB (1,878 words) - 22:01, 27 March 2025
Computational geometry (redirect from List of journals in computational geometry)
fundamental problems of this type are: Convex hull: Given a set of points, find the smallest convex polyhedron/polygon containing all the points. Line segment...
15 KB (2,116 words) - 18:43, 23 June 2025
Two ears theorem (category Theorems about polygons)
anthropomorphic polygons. Repeatedly finding and removing a mouth from a non-convex polygon will eventually turn it into the convex hull of the initial polygon. This...
9 KB (1,127 words) - 23:51, 24 May 2025
theorem is a result in discrete geometry stating that a non-convex simple polygon can be made into a convex polygon by a finite sequence of flips. The...
4 KB (569 words) - 11:18, 12 March 2024
Graham scan (category Convex hull algorithms)
Graham's scan is a method of finding the convex hull of a finite set of points in the plane with time complexity O(n log n). It is named after Ronald Graham...
12 KB (1,738 words) - 04:24, 11 February 2025
Potato peeling (redirect from Convex skull)
or convex skull problem is a problem of finding the convex polygon of the largest possible area that lies within a given non-convex simple polygon. It...
3 KB (240 words) - 10:14, 18 December 2023
Polytope compound (section Compounds of tilings)
outer vertices of a compound can be connected to form a convex polyhedron called its convex hull. A compound is a faceting of its convex hull.[citation needed]...
25 KB (1,430 words) - 13:59, 18 February 2025
of use. A convex hull is the smallest convex volume containing the object. If the object is the union of a finite set of points, its convex hull is a...
15 KB (2,301 words) - 01:52, 2 June 2024