# What does isosceles mean in geometry?

##### 1 Answer

Jan 7, 2016

The word "isosceles" is, mostly, used referring to *triangles* with two sides equal in length

#### Explanation:

Here are major properties of isosceles triangles.

Draw altitude

It divides our triangle into two *right triangles* that share a *cathetus* *hypotenuses*

These triangles are congruent by *cathetus* and *hypotenuse* and, therefore altitude

Consequently, two angles at the base of this *isosceles triangle* are also congruent.