It then is no longer a 6 sided hexagon but becomes a 7 sided heptagon
nothing Assuming you mean for example you add a side to a pentagon to get a hexagon, then the sum of the interior angles increases by 180o.
It is not possible to answer a question given only the length of one side of a hexagon unless we are told it is a regular hexagon. I added a link that lets you calculate areas of regular polygons.
A hexagon has one more side than a pentagon.
A hexagon has 6 sides whereas a pentagon has 5 sides
An hexagon has 6 sides and a pentagon has 5 sides
It depends on the size of the hexagon. If the hexagon is very very small, the length of a side could be a nanometre (or smaller). If the hexagon is large, the length could be a light year (or more). In fact, a single hexagon could have one side that is a nanometre in length and another side that is a light year.
Yes
A plane figure that has one more side than a quadrilateral and one less than a hexagon is a... pentagon.
One more side
hexagon
You mean: How many degrees does a hexagon have? 180 degrees for every side added after a triangle. Therefore, 180+180+180+180= 720 DEGREES
It has 1 more side