isosceles

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By division we may separate them into scalene, isosceles, and equilateral, or if we divide them according to a different principle into right and oblique triangles.

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Definitions (4)

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  1. adjective Mathematics Having two equal sides: an isosceles triangle.

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Examples (50)

  • This mile of distance, taking the COTTAGE Royal of Sans- Souci on its hill-top as vertex, will be the base of an isosceles or nearly isosceles triangle, flatter than equilateral. —  History of Friedrich II of Prussia
  • "Right, isosceles, equilateral, obtuse, acute, and scalene," and he actually smiled. —  Stabenow, Dana - [Liam Campbell 01] - Fire and Ice
  • The real world does not always conveniently lend itself to a nice isosceles or Weaver stance, and there could be times when an unorthodox stance is necessary.
  • We have a Genus, triangle; and a Species, isosceles, marked off from all other triangles by the differential quality of having two equal sides: again--Genus, book; Species, quarto; Difference, having each sheet folded into four leaves There are other cases where these expressions 'genus' and 'species' cannot be so applied without a departure from usage, as, e.g., if we call snow a species of the genus 'white,' for 'white' is not a recognised class. —  Logic Deductive and Inductive
  • A further commendable simplification of the conditions consists in arranging the pendulum and disc to move concentrically, and attaching to the pendulum an isosceles-triangular shield, so cut that it forms a true radial sector of the disc behind it. —  Harvard Psychological Studies, Volume 1 Containing Sixteen Experimental Investigations from the Harvard Psychological Laboratory.
 

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Etymologies (2)

Toggle American Heritage etymologies American Heritage Dictionary (1)

  1. Late Latin īsoscelēs, from Greek īsoskelēs : īso-, iso- + skelos, leg.

Toggle Century etymologies Century Dictionary (1)

  1. from Latin isosceles, from Greek ἰςοσκελήσ, σ2, with equal legs (ἰσοσ, σ1κελές τρίγωνον, a triangle with two sides equal), from ἴσος, equal, + σκέλος, leg.
 

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/aɪˈsɑsɛliz/
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