Angle Apothem Axes
Axiom
bisector
mk
width
I think vertex...
nonagon
in geometry, width
centagan: 100-gon
How about a decagon which is a ten sided polygon
The word you are looking for is:Trigonometry
Kite is one of them which is a 4 sided quadrilateral
kite- A quadrilateral that has two distinct pairs of consecutive equilateral sides
fraction.