There is no specific name for such a quadrilateral.
In a 3D world with 6 sides it is a cube.
A shape where all the sides are equal and all the angles are equal. If all sides are equal but angles or not, it is equilateral. If it is vice versa, it is equiangular.
It is an irregular shape or polygon that doesn't have all sides equal
A square is a four-sided shape with all sides equal and all angles equal.
As long as the angles are all equal as well then it is a regular shape.
When all its sides and angles are equal.
all the sides of the shape are equal (:
It is an irregular shape
A shape with six sides is a hexagon. A hexagon with all sides and angles equal is a regular hexagon.
This shape is called an icosikaitera. All of the sides of the icosikaitera are all of the same equal length.