sphere
It is the total surface area.
A face.
surface area
No, a cylinder is not a polygon. It is not a polygon because it has curved sides. In order to be considered a polygon, it would need to have flat sides. Also, a polygon is a 2 dimensional shape but a cylinder is a three dimensional shape.
A two-dimensional shape with three sides is a triangle. A three-dimensional shape with three faces is a cylinder.
sphere
It is the total surface area.
It is a polyhedron.
Because that is how a polyhedron is defined.
Because that is how a polyhedron is defined.
A face.
It is a sphere which looks like a globe
The "topography" of Venus is the three dimensional shape of the surface of Venus.
sphere
cylinder
A toroid is a doughnut shaped, three dimensional shape like an O ring. Any three dimensional shape can be rotated completely around an axis to create a toroid shape leading to toroids with both curved and flat faces.
Because that is how a polyhedron is defined.