How many planes do you have in a square?

Answer 1

Well, honey, in a square, you've got four sides, so you'll need four planes to match each side. Unless you want to get fancy and start stacking them on top of each other, then the sky's the limit!

Answer 2

A square is two-dimensional and occupies one plane.

A cube is three-dimensional and contains 6 planes, and 3 pairs of parallel sides.