case 1<BR>In 2D coordinate system the sum of the angles of all quadrants=360 degree= 2pi radian<BR>in (x,y) plane<BR>Case 2<BR>In 3D coordinate system (x,y,z) I took 3 possible ...

Computer animation may be a lot better than it used to be, but it’s been around for quite a while. This is an example of one of the older bits, dating way back to 1965, and it features some 4D shapes.