折線又稱多邊形鏈(polygonal chain)或多段線(polyline)是指一系列相連的線段,通常是一些任意不同方向的直線段首尾相連結所形成的線。 與多邊形不同,折線並不要求線的整體要頭尾封閉。 更正式地說,折線P是由一系列稱為其頂點的點 ( A 1 , A 2 , … , A n ) {\displaystyle
2001: 84. ISBN 9784529035477. Paul Bourke; Polygons and meshes:Surface (polygonal) Simplification (页面存档备份,存于互联网档案馆) 1997. (retrieved May 2016) Ian Stewart
of the pentagonal numbers Guy, Richard K. Every Number is Expressible as the Sum of How Many Polygonal Numbers?. The American Mathematical Monthly. 1994-02
[2019-09-20]. (原始内容存档于2017-07-06). Paul Bourke; Polygons and meshes:Surface (polygonal) Simplification (页面存档备份,存于互联网档案馆) 1997. (retrieved May 2016) Rae Earnshaw