7. The diagonals of a quadrilateral bisect each other. What is the most accurate way to classify this quadrilateral?
A. parallelogram
B. rectangle
C. rhombus
D. trapezoid

8. ABCD is a quadrilateral that has congruent diagonals. What is the most accurate way to classify this quadrilateral?
A. parallelogram
B. rectangle
C. rectangle, isosceles trapezoid
D. trapezoid

9. What is the sum of the interior angles of any quadrilateral?
A 90°
B. 180°
C. 380
D. 450°​