Question

How can a triangle be a isosceles?

Answer 1

A triangle is isosceles if only two sides are the same length.
Hope this helps! :3

Answer 2

In order a triangle to become an isosceles it has to have two angles to be the same, (usually bottom), also it has to have two side length to be the same as well. They often look narrow and two long (same side length) sides with the third side short.