Share this entry
isosceles Syllabification: i·sos·ce·les
Pronunciation: /īˈsäsəˌlēz/

Definition of isosceles in English:


(Of a triangle) having two sides of equal length.
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:
Share this entry

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Subscribe to remove ads and access premium resources