A rhombus
A rectangle.
It is a rhombus that has 4 equal sides but not 4 equal interior angles
rhombus
A rectangle
square
Rectangle.
rhombus
Square.
A square or a rectangle
A rhombus
A square has four sides so it is a quadrilateral. All sides of a square are of equal length so it is equilateral. All angles of a square are of equal measure so it is equiangular. A quadrilateral that is equilateral and equiangular is a regular quadrilateral.
Yes! It's called a rhombus.