This term is usually used with triangles, and in this case, it means that at least 2 sides are equal in length.
Note that this could be 2 sides or 3 sides (called an equilateral triangle, and is still an isosceles triangle).
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thank goodness for my math teacher, norm! he said only in an isosceles triangle. The bisector of the vertex angle of an isosceles triangle is perpendicular to the base! =)
What does length mean in math
It depends on isosceles WHAT? There are isosceles triangles, isosceles trapezia, for example.
Communitive means of, or belonging to, a community. It has no meaning in math. Communative does not mean anything - in math or elsewhere.
the mean is the average