• Thumbnail for Simple polygon
    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
  • Thumbnail for Convex hull
    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
  • Thumbnail for Convex polygon
    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
  • Thumbnail for Convex hull of a simple polygon
    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
  • Thumbnail for Concave polygon
    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
  • Thumbnail for Polygon triangulation
    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
  • Thumbnail for Relative convex hull
    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
  • Thumbnail for Rectilinear polygon
    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
  • Thumbnail for Convex polytope
    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
  • Thumbnail for Polyhedron
    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
  • Thumbnail for 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
  • 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
  • Thumbnail for Minkowski addition
    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
  • Thumbnail for Convex curve
    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
  • Thumbnail for Voronoi diagram
    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
  • Thumbnail for 120-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
  • Thumbnail for Polygonal modeling
    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
  • Thumbnail for Happy ending problem
    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
  • 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
  • Thumbnail for Two ears theorem
    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
  • Thumbnail for Graham scan
    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
  • 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
  • Thumbnail for Bounding volume
    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