A square.
no it is a quadrilateral
No, equilateral and regular are the same thing.
rhombus
A rhombus
No, a square is an equilateral quadrilateral. http://en.wikipedia.org/wiki/Quadrilateral
An equilateral quadrilateral is a rhombus (plural rhombi).
A square.
no it is a quadrilateral
No, equilateral and regular are the same thing.
A square
Yes.
rhombus
A rectangle
It is a rhombus
square
rhombus