What theorem states the sum of the squares of the lengths of the sides of a right triangle is equal to the square of the length of the hypotenuse?

The polygon tool to draw a rectangle with a length of 5 units and a height of 3 units. one of the sides of the rectangle falls on line ab , and the rectangle has a vertex of a. each segment on the grid represents 1 unit.

Are the corresponding angles congruent? explain why or why not.

Whats are the trickiest steps to do when adding or subtracting rational expressions? how does knowledge of rational numbers u in adding and subtracting rational expressions?