A nonagon
A nine sided shape or polygon is called a nonagon.
It is called a nonagon and/or an enneagon. They belong to the greater family of polygons.
Nonagon
nonahedron
a 9 sided shape is a nonagon
Not sure about a five sided shap, but a five sided plane shape is called a pentagon.
An 8 sided shape is called an octagon
A Do-decagon.
Undecagon
A heptagon
A nonagon is a 9 sided polygon having 9 interior angles
A pentagon or an irregular pentagon if the sides are unequal in length.
Yes.
A 7 sided shape is an heptagon and sometimes known as a septagon
A 9 sided polygon is a nonagon
A kite and a trapezoid are both 4 sided quadrilaterals