A square.
Any rectangle.
square of course
A square and a rhombus
A square, a rhombus and a kite
Parallelogram (Rectangle, Square, Rhombus, or Rhomboid) or a Kite
The name that will be correct in the greatest number of cases (all of them) is "rhombus".
a triangle has 0 diagnols
no
8
2
It is an octagon