What 2D shapes make a sphere?

Answer 1

There is no 2D shape that makes a sphere, since a sphere is 3D by definition. The closest thing to a 2D sphere is a circle.

Answer 2

if you rotated a circle about its diameter in space it's circumference would inscribe a sphere. Cut a ball in half and look at its cross section. You will see a circle.

Answer 3

circle

Answer 4

0 2D shapes