isosceles

adjective isos·ce·les \ ī-ˈsäs-ˌlēz , -ˈsä-sə- \

Definition of isosceles

1 of a triangle :having two equal sides — see triangle illustration
2 of a trapezoid :having the two nonparallel sides equal

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Origin and Etymology of isosceles

Late Latin isosceles having two equal sides, from Greek isoskelēs, from is- + skelos leg; perhaps akin to Old English sceol wry



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