Assertion: polygon | /r/HasProperty | simple
Facets:
Source sentences:
text: The polygon must be simple, and may be convex or concave.
text: It is a simple curve that is made up of straight line segments.
text: If the edges (lines of the polygon) do not intersect (cross each other), the polygon is called simple, otherwise it is complex.
text: A polygon in the plane is simple if and only if it is topologically equivalent to a circle.
text: If the polygons are simple, the latter alternative is faster since the two convex hulls can be computed in and time using Melkman’s algorithm, and then the tangents between them can be found in or even time.