A parallelogram always has. (That includes all squares, rectangles, and rhombera.)
Also, any polygon with more than four sides can have them, but doesn't have to.
a squareof course
A parallelogram and a rhombus
Square, Rectangle.
A square.
Rectangle
a squareof course
A parallelogram and a rhombus
A rectangle
A Square.
parallelogram
No, one pair.
None
Square, Rectangle.
A rectangle.
A square.
Rectangle
Parelle