.~ Geometry, trigonometry, or physical mathematic model structure

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434 / | HD | EDUCATION AND DEMONSTRATION |

188 | DF | MATHEMATICS {4} |

211 | .~ Geometry, trigonometry, or physical mathematic model structure {5} | |

212 | DF | .~.~> Pythagorean theorem |

213 | DF | .~.~> Property of sphere or spheroid |

214 | DF | .~.~> Property of circle or ellipse |

215 | DF | .~.~> Demonstration means using relatively turnable elements |

216 | DF | .~.~> Demonstration means using filament (e.g., string, etc.) to define geometric shape |

Geometry, trigonometry, or physical mathematical model structure:

(under subclass 188) Subject matter relating to the branches of mathematics that deal with (a) the measurement, properties, and relationships of points, lines, angles,

surfaces, and solids, (b) the study of trigonometric functions and their applications, or (c) relating to a physical representation of some mathematical relationship, e.g.., a model of a parabola.

33, Geometrical Instruments, appropriate subclasses for geometrical instruments.

708, Electrical Computers: Arithmetic Processing and Calculating,