a 9 sided shape is a nonagon
A nonagon has 9 sides
A nonagon is a 9 sided polygon having 9 interior angles
Not sure about a five sided shap, but a five sided plane shape is called a pentagon.
Yes.
A Do-decagon.
Undecagon
An 8 sided shape is called an octagon
A heptagon
A kite and a trapezoid are both 4 sided quadrilaterals
A nonagon.
Nonagon.
A pentagon or an irregular pentagon if the sides are unequal in length.