Parallelogram
A 12-sided shape is called a dodecagon.
a one sided shape is called a henagon and a 2 sided shape is called a digon
Icosahedron
An octagon
Parallelogram
a semi-circle
you call a seven sided shape a heptagon.
A quadrilateral
a digon ']* * * * *There cannot be such a shape.
An 11 sided shape is an Eptogon
a heptigon
A 12-sided shape is called a dodecagon.
A 30 sided shape is called a Triacontagon.
A 101-sided shape is called a "hectacontakaihenagon." The naming convention for polygons involves using Greek numerical prefixes to indicate the number of sides, followed by the suffix "-gon" to denote a polygon. In this case, "hectaconta-" represents 100, and "henagon" refers to a polygon with one side.
A nine sided shape or polygon is called a nonagon.
A 200-sided shape is called a dihectogon. The prefix "di-" indicates 200 in this context, and the suffix "-gon" denotes a polygon with a specific number of sides. Dihectogons are very rare in geometry and are not commonly encountered in practical applications.