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equilateral

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adjective equi·lat·er·al \ˌē-kwə-ˈla-tə-rəl, ˌe-, -ˈla-trəl\

Definition of equilateral

  1. 1 :  having all sides equal <an equilateral triangle> <an equilateral polygon> — see triangle illustration

  2. 2 :  having all the faces equal <an equilateral polyhedron>



Origin and Etymology of equilateral

Late Latin aequilateralis, from Latin aequi- + later-, latus side — more at lateral


First Known Use: 1570

Other Mathematics and Statistics Terms



EQUILATERAL Defined for Kids

equilateral

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adjective equi·lat·er·al \ˌē-kwə-ˈla-tə-rəl, ˌe-kwə-\

Definition of equilateral for Students

  1. :  having all sides or faces equal <an equilateral triangle>




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