I think you mean corner and it's called a vertex. If you have more than one vertex they are called vertices.
It is a 7 sided heptagon polygon
it a line joning from coner 2 coner
Carpenters corner
A polygon with 3 sides is called triangle A polygon with 4 sides is called quadrilateral A polygon with 5 sides is called pentagon A polygon with 6 sides is called hexagon A polygon with 7 sides is called heptagon A polygon with 8 sides is called octagon
For a nine side polygon its called a nonagon.For a nine side polygon its called a nonagon.For a nine side polygon its called a nonagon.
That is called a regular polygon.
A polygon with 10 sides is called...
An 8-sided polygon is called an octagon.
It is called a regular polygon.
A five sided polygon is called a pentagon because pentagon means five sided polygon I think.
No Coner did not go to jail.
A ten sided polygon is called a Decagon.