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SUMO
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Entity
Sigma KEE - ClosedTwoDimensionalFigure
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closed two dimensional figure
Any
TwoDimensionalFigure
which has a well defined interior and exterior.
Relationships
Parents
two dimensional figure
The class of
GeometricFigure
s that have position and an extension along two dimensions, viz. plane figures like circles and polygons.
Children
polygon
A
ClosedTwoDimensionalFigure
that is composed exclusively of straight lines.
Instances
circle sector
A slice of a
Circle
, i.e. any
ClosedTwoDimensionalFigure
which consists of two Radii and the arc of the
Circle
that they bound.
circular segment
A
CircularSegment
is a plane region bounded by a circular arc (of less than Pi radian by convention) and the circular chord connecting its endpoints.[wikepedia]
oval
An instance of
ClosedTwoDimensionalFigure
s that is produced by the intersection of a
Cone
with a
ClosedTwoDimensionalFigure
.
semicircle
Half of a
Circle
, i.e. the
CircleSector
formed when the two bounding radii are colinear and together form a diameter of the
Circle
.
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Sigma version 3.0.0-
0a80e6c8
(2026-05-12) is
open source software
produced by
Articulate Software
and its partners