Definition of isosceles in English:


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


(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.


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

Definition of isosceles in: