Answer:
Converse: If a triangle is equilateral, then it has three sides.
Converse: If a number is divisible by two, then the number is even.
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,then the sum of the squares of the lengths of the legs is equal to the square of the hypotenuse
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Converse of pythagorean theorem: if the sum of the squares of the lengths of the legs is equal to the square of the hypotenuse, then the triangle is a right triangle
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or not triangles are right triangles