The value of x that proves this parallelogram is a rhombus is

The sum of two numbers is 12 and their difference is 18 what are the two numbers

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.

Meee i honestly dont know what this question talking about