A shape with more than 10 sides may be called a polygon - but only if all the sides are straight lines - and there is nothing in the question to suggest that they are.
Decagon. Dec=10
A 3d shape with 10 sides is called a decahedron. I have added a link with some pictures of them. As you can see they look very different but all have 10 sides or faces.
The shape you're referring to is call a decagon.
It is the decagon.
A shape with more than 10 sides may be called a polygon - but only if all the sides are straight lines - and there is nothing in the question to suggest that they are.
Anything with more than 10 sides
An irregular (concave) polygon with 10 or more sides.
a dodecagon A dodecagon has 12 sides, so it has at least 10 sides but so do lots of other polygons. I wouldn't consider this a correct answer. A decagram is constructed from two pentagons, but actually has more than 10 sides. 10-gon might be acceptable.
A decagon has 10 sides A heptagon has 7 sides Therefore a decagon has 10 - 7 = 3 more sides than a heptagon.
Any shape with 10 sides is called a decagon. A regular decagon is a shape with 10 even sides, so you are looking for an irregular decagon.
A decagon has 10 sides, and a quadrilateral has 4 sides, therefore a decagon has 6 more sides than a quadrilateral.
A decagon has 7 more sides than a triangle. A triangle has 3 and a decagon has 10.
Decagon(10 sides polygon).
A shape that has 10 sides (two dimensional) is called a decagon. A shape that has 10 faces (three dimensional) is call a decahedron.
a decagon only has 10 sides so 2 more sides
a shape with 10 sides is called a decagon.