1 Equilateral triangle, 2 Square, which is a special case of 3 Rhombus, 4 Pentagon with equal sides, 5 Hexagon with equal sides etc etc
A nonagon is a 2 dimensional shape that has nine sides. A polygon on the other side refers to a plane that is 2D and has three straight sides.
It is the decagon.
Hexagon
a line
The shape of 2D is a flat surface.
2d shapes that do not have equal sides do not usually have special names.
Regular
No, a rhombus is a 2D shape. It is a parallelogram in which all sides are of equal length.
Irregular polygon
A pentagon.
square
a square does
It is a rhombus that has 4 equal sides but is not a square
The Correct Answer is Irregular
It is a rhombus that has 4 equal sides but is not a square
A shape with six sides is a hexagon. A hexagon with all sides and angles equal is a regular hexagon.