poly·gon /ˈpɑliˌgɑn/
  多邊形多邊形,多角形
  polygon
  多邊形
  polygon
  多邊形
  Pol·y·gon n.  Geom. A plane figure having many angles, and consequently many sides; esp., one whose perimeter consists of more than four sides; any figure having many angles.
  Polygon of forces Mech., a polygonal figure, the sides of which, taken successively, represent, in length and direction, several forces acting simultaneously upon one point, so that the side necessary to complete the figure represents the resultant of those forces.  Cf. Parallelogram of forces, under Parallelogram.
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  polygon
       n : a closed plane figure bounded by straight sides [syn: polygonal
           shape]