You do not see the top of the object and the bottom of the object being turned over. When you stand in front of it, your head remains at the top and your legs remain below. All it does it invert the...
One is called one and two is called two, because those are the terms assigned to those symbols and their values. It's the same reason we call an apple an apple, and a boat a boat.
Not sure what you are referring to. Radial symmetry? Objects with radial symmetry can be rotated in a plane and appear the same. Starfish have radial symmetry.Compared to bilateral symmetry where the...