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.
A heptagon
A nonagon has 9 sides
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 shape is a nonagon
11-sided QuadrilateralAn 11-sided quadrilateral is called a hendecagon.
An 11 sided figure is called a hendecagon, an undecagon, or a 11-gon.
A kite and a trapezoid are both 4 sided quadrilaterals