A shape in 2D with n sides is called an n-gon.
In higher dimensions, a shape with n sides is called an n-sided polyhedron.
Septagon or Heptagon = seven sided shape
A 3-sided shape is called a triangle.or Polygon in general.
an n-gon
A 10-sided shape, also known as a decagon, has 10 vertices. Each vertex is a point where two sides of the shape meet. In general, an n-sided polygon has n vertices.
A 4 sided shape is classified as a quadrilateral.
Septagon or Heptagon = seven sided shape
A 3-sided shape is called a triangle.or Polygon in general.
The nonagon is a 9-sided shape.
Answer: nonagon.
a PENTAGON
an n-gon
The equation for and interior angle of an n sided shape is (n-2)180/n In this case we have a 12 sided shape. Plugging n=12 into the equation gives us: (12-2)180/12 = 10x180/12 = 150 Thus an interior angle of a 12 sided shape would be 150 degrees.
The internal angles of an n-sided shape add to (n-2)*180 degrees. So, for an 8-sided shape, they would add to 6*180 = 1080 degrees.
"n-gon"
A 10-sided shape, also known as a decagon, has 10 vertices. Each vertex is a point where two sides of the shape meet. In general, an n-sided polygon has n vertices.
A 4 sided shape is classified as a quadrilateral.
A 6-sided shape is one kind of polygon. It can also be called a hexagon.