There is no such thing as a 1 sided shape nor a two sided shape.
12-sided two dimensional shape: dodecagon12-sided three dimensional shape: dodecahedron
a two sised shape is a semi-cirvle
A 6-sided shape is one kind of polygon. It can also be called a hexagon.
a 2 sided shape is real but a 1 sided shape is not
A nine sided two dimensional shape would be called a nonagon. Nona is a common prefix meaning nine of something.
A diagon, is an example of a two sided shape, which is basically a secton of a sphere emcompassed by two circumferences disecting. or a plane (e.g a sheet of paper) or a strip (a simple ring shape)
A hexahedron is a three-dimensional geometric shape having six sides; a hexagon is a two-dimensional six-sided shape.
A four-sided shape with only 2 sides the same length is called a rhombus.
Two-dimensional: Pentagon Three-dimensional: Pentahedron
A four-sided shape in which only two sides are parallel is called a trapezoid. All two-dimensional, four-sided shapes are known as quadrilaterals.
A triangle is a 3 sided shape. There are a few types, Isosceles, Scalene (Acute and Obtuse), Equilateral and the Right angle triangle.