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Yes- but not all isosceles triangles are right triangles. Isosceles means that two sides are the same length, and two angles are the same.
two isosceles triangles with common line
An Isosceles triangle has two sides (and two angles) congruent.
An isosceles triangle has two sides the same length and one different. Two isosceles triangles is just two triangles like that. Unless you put them together and then you get a rectangle. I don't know if that was the answer you were looking for but that's all I got.
Isosceles triangles have at least 2 equal angles. The 3rd angle can either be equal to the other two (it's then called an equilateral triangle), or it can be different from the two equal angles, in which case it's an isosceles triangle. All equilateral triangles are isosceles triangles, but not all isosceles triangles are equilateral triangles.