Any regular polygon. Lots of irregular polygons can also have congruent diagonals, for example a kite. The answer should not be "a square" because it is a rectangle - a special case but a rectangle nevertheless.
yes they are
Yes, they are.
yes they are
If the diagonals are cong. then the figure is a rectangle.
The diagonals are not congruent unless the parallelogram happens to be a rectangle.
congruent
congruent
Any regular polygon. Lots of irregular polygons can also have congruent diagonals, for example a kite. The answer should not be "a square" because it is a rectangle - a special case but a rectangle nevertheless.
The diagonals of a rectangle are congruent and they bisect each other.
No, the diagonals of a parallelogram are not normally congruent unless the parallelogram is a rectangle.
If a parallelogram is in the form of a rectangle then both diagonals are congruent in lengths.
congruent
Yes
yes they are
Yes, they are.
yes they are