Question

am i right ??

Answer 1

A sphere has the same shape as a circle except that the circle is 2D while the sphere is 3D. So you would have to rotate the circle in both directions to get a sphere.

Answer 2

yes, assuming it is centred at the origin... but really, you can rotate a circle across any diameter as the axis of rotation and get a sphere

Answer 3

I think its A.

Answer 4

As i said, any diameter, check the picture and give it a think

Answer 5

i also think its A

Answer 6

using a line above/below/beside a circle would create a torus

Answer 7

it indeed, is A

Answer 8

that would be correct.

Answer 9

thanks

Answer 10

Soooo. Just to add some more detail to this discussion I don't recommend using A and B as it may confuse us further when we see x and y. Also rotating any circle along the x or y axis will produce a sphere. More generally a sphere can be produced my rotating any circle across any axis

Answer 11

I think this drawing deserves medal... :)