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
Dooctahedron
Icosahedron
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 seven sided shape is called a heptagon.
A 12-sided shape is called a dodecagon.
A 30 sided shape is called a Triacontagon.
You can call a 101-sided shape a hecatontakaihenagon. The "hecto-" in the word means "one hundred" and the "henagon" means "one-sided geometric shape."
A nine sided shape or polygon is called a nonagon.