Definition of isosceles in English:

isosceles

Syllabification: i·sos·ce·les
Pronunciation: /īˈsäsəˌlēz
 
/

adjective

  • (Of a triangle) having two sides of equal length.
    More example sentences
    • The base angles of an isosceles triangle are equal.
    • Mathematicians sometimes say that A is an arbitrary isosceles triangle, but all they mean is that A could be any such triangle.
    • First construct an isosceles triangle whose base angles are double the vertex angle.

Origin

mid 16th century: via late Latin from Greek isoskelēs, from isos 'equal' + skelos 'leg'.

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