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concept:rotation-symmetry

rotation symmetry

Rotation about a point by an angle 360°/n leaving the pattern invariant

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Concepts (1)

concept
  • One of four key isometries; rotation about a point through a given angle, with n-fold variants based on 360°/n invariance.

Related by similarity (8)

cosine ≥ 0.65 · no typed edge

Entities in the same semantic neighborhood but without a typed relation to this one — candidates for new edges or unrecognized duplicates.

  • Rotation by 180° about a center leaving the pattern invariant
  • One of four key isometries; reflection across a line (mirror line or axis of reflection).
  • Movement in a given direction through a given distance; all frieze patterns possess this symmetry by definition.
  • LOCAL SYMMETRYconcept0.775
    One of Alexander's fifteen properties; appears in birthday table, handshake, and namaste examples
  • One of four key isometries; combination of reflection and translation parallel to the mirror line.
  • Property where background and foreground tiles have identical shapes; observed in pmg2 patterns at the Alhambra.
  • Illustration that a hand's fingers are symmetrical and the wrist is composed of roughly symmetrical parts.
  • Symmetry Groupsconcept0.744