Prove that if the side of one equilateral triangle is equal to the side of the other equilateral triangle, then the triangles are equal.

We have two equilateral triangles, such triangles have three equal sides. Therefore, if one side of the first equilateral triangle is equal to the side of the second equilateral triangle, then these sides will be equal to all sides of the triangles. Thus, we have 6 equal sides.
And according to the theorem on the equality of triangles (3 signs) – such triangles are equal.



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