It is a three dimensional figure of some sort.
a star
A regular tetrahedron
yes
A sphere.
They are called polygons
A Snow Man!!
It is a three dimensional figure of some sort.
a star
A regular tetrahedron
yes
A triangulare prism
Spatial figure is a three dimensional figure. It is made up of plane figure whose all sides are joined together to form a close figure
Cartesian coordinate system
A sphere.
There are infinitely many different plane figures that can be made up of 2-dimensional shapes - provided that they are all in the same plane. There cannot be any 3-dimensional shapes involved.
A polyhedron is a three dimensional figure made up of sides called faces, where each face is a polygon.