Sentence Examples


  • Incidentally Pappus describes the thirteen other polyhedra bounded by equilateral and equiangular but not similar polygons, discovered by Archimedes, and finds, by a method recalling that of Archimedes, the surface and volume of a sphere.
  • [3] Thales discovered the theorem that the sides of equiangular triangles are proportional.
  • Tait that a similar representation of the type (30) is obtained if we replace the circle by an equiangular spiral described, with a constant angular velocity about the pole, in the direction of diminishing radius vector.
  • Again, in the equiangular spiral we have p =r sin a, and therefore P = u/ri, if u =hh/sinh a.
  • But since an equiangular spiral having a given pole is completely determined by a given point and a given tangent, this type of orbit is not a general one for the law of the inverse cube.

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