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You need to draw a straight line segment which starts inside the polygon, crosses to the outside of the polygon, then winds up back inside the polygon. ... Return to Polygons...
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mathforum.org/sum95/math_and/poly/concave.html
mathforum.org/sum95/math_and/poly/concave.html
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Convex and concave polygons - Wikipedia, the free encyclopedia
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In geometry, a polygon can be either convex or concave . A convex polygon is a simple polygon whose interior is a convex set. The following properties of a simple polygon are all equivalent to c...
en.wikipedia.org/wiki/Convex_and_concave_polygons
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A concave polygon is a polygon that is not convex. A simple polygon is concave iff at least one of its internal angles is greater than 180 degrees . ...
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mathworld.wolfram.com/ConcavePolygon.html
mathworld.wolfram.com/ConcavePolygon.html
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Definition of concave polygon in the AudioEnglish.net Dictionary. Meaning of concave polygon. What does concave polygon mean? Proper usage and pronunciation (in phonetic transcription) of the word concave polygon. ... Dictionary entry overview: What does concave polygon mean?
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www.audioenglish.net/dictionary/concave_polygon.htm
www.audioenglish.net/dictionary/concave_polygon.htm
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CiteSeerX - Document Details (Isaac Councill, Lee Giles): This paper describes an algorithm to perform clipping of two possibly concave polygons. The approach labels the edges of the input polygons. ... An Edge Labeling Approach to Concave Polygon Clipping (1995) [1 citations — 0 self]
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citeseer.ist.psu.edu/schutte95edge.html
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Thread Subject: Concave Polygon Triangulation ... Is there a way in Matlab to triangulate a concave polygon? Or split the concave polygon into many convex polygons? I have looked at Delaunay tessellation, but that's not really an option because it also connects points to form triangles that are outside of the polygon.
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www.mathworks.com/matlabcentral/newsreader/view_thread/...
www.mathworks.com/matlabcentral/newsreader/view_thread/253562
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Media in category "Concave polygon" ... The following 2 files are in this category, out of 2 total. ... From Wikimedia Commons, the free media repository...
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commons.wikimedia.org/wiki/Category:Concave_polygon
commons.wikimedia.org/wiki/Category:Concave_polygon
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A method and processor are disclosed for drawing a concave polygon in a computer graphics display system. Pursuant to the method, a mask buffer organized into a plurality of addressable M x N constitu ... 4. A method as claimed in claim 3, wherein said concave polygon comprises a polygon with a polygonal hole,
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www.freepatentsonline.com/EP0425189.html
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