You can find polygons almost anywhere in daily life. A very common example that you see every day is a stop sign, the screen on your computer, the wall of a house, posters on a window, etc.
circumscribed means the polygon is drawn around a circle, and inscribed means the polygon is drawn inside the circle. See related links below for polygon circumscribed about a circle and polygon inscribed in a circle.
Yes. (see image link)
Triskaidecagon or Tridecagon
A pentadecagon* has fifteen sides.* See Related links below.
I can't see the polygon you're referring to, but the name of a polygon is typically determined by the number of its sides. For example, a three-sided polygon is called a triangle, a four-sided one is a quadrilateral, a five-sided one is a pentagon, and so on. If you can describe the number of sides, I can help identify its name!
see related link below to see the 20 sided polygon
PolyGon
A 20-sided polygon is an icosagon.(see related link)
circumscribed means the polygon is drawn around a circle, and inscribed means the polygon is drawn inside the circle. See related links below for polygon circumscribed about a circle and polygon inscribed in a circle.
A polygon with 17 sides is called a heptadecagon or heptakaidecagon.(see related link for list)
A sixteen-sided polygon is called a hexadecagon.(see related link for list)A Hexadecagon.
A 57-sided polygon would be called a pentacontaheptagon.(see related link for naming)
Yes. (see image link)
icosikaidi is the name for a 22 sided polygon. For a list of the names for polygons, see the related link.
A polygon is a closed shape bounded by only straight lines. The distance around a polygon is called the Perimeter The actual distance of the polygon depends on the shape. See related links below for a website I believe will help you.
Triskaidecagon or Tridecagon
An icosikaidigon is a 22-sided polygon. For names of polygons see http://mathforum.org/dr.math/faq/faq.polygon.names.html