25. which description does not guarantee that a quadrilateral is a rectangle?
select one:
a. a quadrilateral with all congruent angles
b. a quadrilateral with diagonals that are congruent and bisect each other
c. a quadrilateral with all four angles right
d. a parallelogram with congruent sides
10. find the value of the variables.
select one:
a. x = 67, y = 134
b. x = 23, y = 46
c. x = 67, y = 46
d. x = 23, y = 134