True Or False: A triangle with the side lengths of 9, 12, 17 is a right triangle

Terri makes a quilt using three sizes of fabric squares the side lenght of each fabric square is the square root of the area

What is the image of c for a 90° counterclockwise rotation about a? (3, 7) (-1, 3) (7, 3)

Plzz ! if you were constructing a triangular frame, and you had wood in the length of 4 inches, 4 inches, and 7 inches, would it make a triangle? would you be able to create a frame from these pieces of wood? yes or no? = explain your mathematical thinking/show your work: