What are the coordinates of the circumcenter of this triangle? Enter your answer in the boxes. A right triangle A B C is shown on a coordinate plane. A is located at (1,1). B is located (1,-3) . C is located at (7,-3)

Fill in the blank 1. a rhombus is a rectangle a) always b) sometimes c) never 2. a square is a quadrilateral a) always b) sometimes c) never 3. a trapezoid is a kite a) always b) sometimes c) never 4. a quadrilateral is a kite a) always b) sometimes c) never 5. a square is a rhombus a) always b) sometimes c) never 6. a parallelogram is a rectangle a) always b) sometimes c) never