I really need help

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Which of the following statements would be sufficient to prove that parallelograms pqrs is a rectangle ?

Prove the converse of the pythagorean theorem using similar triangles. the converse of the pythagorean theorem states that when the sum of the squares of the lengths of the legs of the triangle equals the squares length of the hypotenuse, the triangle is a right triangle. be sure to create and name the appropriate geometric figures.

Idk math. i need to fill in the missing numbers . due tommorow !