If they were square, then everything would be hard. If you stood on a vertex (corner), you would probably have reverse gravity and fall of the face of the earth.
Chat with our AI personalities
A pyramid
Both. ANY 2-dimensional shape ... that is, a shape drawn in a plane, or on a piece of paper ... has only one surface.
The sun's gravity pulls the planets.
The history of the planets had nothing to do with humans. Humans used the planets as religious symbols.
You mean places not planets