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KB:
SUMO
Language:
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ar
cb
classmate
colleague
cz
de
expectedYearOfGraduation
hi
tg
Formal Language:
OWL
SUOKIF
TPTP
traditionalLogic
Sigma KEE  Quadrilateral
KB Term:
A
B
C
D
E
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H
I
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P
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Quadrilateral
Any foursided
Polygon
.
Relationships
Parents
Polygon
A
ClosedTwoDimensionalFigure
that is composed exclusively of straight lines, i.e.
OneDimensionalFigure
s.
Children
Rectangle
Any
Quadrilateral
whose angles are all
RightAngle
s.
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Suggested Upper Merged Ontology (SUMO) web home
Sigma version 2.99c (>= 2017/11/20) is
open source software
produced by
Articulate Software
and its partners