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bn:00035565n
Noun Concept
Categories: Geometric centers, Conic sections
EN
focus  circular directrix  directrix circle  Focal radius  foci
EN
A fixed reference point on the concave side of a conic section WordNet 3.0
English:
geometry
mathematics
Definitions
Relations
Sources
EN
A fixed reference point on the concave side of a conic section WordNet 3.0 & Open English WordNet
In geometry, focuses or foci are special points with reference to which any of a variety of curves is constructed. Wikipedia
A key point in specifying a conic section or other plane curve Wikipedia Disambiguation
Fixed reference point; special points with reference to which any of a variety of curves is constructed Wikidata
A special point used to define a conic section. OmegaWiki
IS A
point
point
DERIVATION
focal
WordNet 3.0 & Open English WordNet
EN
focus
Wikipedia
EN
focus (geometry)
Wikidata
EN
focus
OmegaWiki
EN
focus
Wikipedia Redirections
EN
circular directrix, directrix circle, Focal radius, Focus (mathematics), Focus of a parabola
Wikidata Alias
EN
directrix circle, foci, focus of a parabola, focuses

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