I don't know silly!
A square!
A square
No because it is flat 2d shape with 4 equal sides
Well its still a 2d because its like a normal square
A quadrilateral rectangle or a square
A square is a 2-dimensional shape. It has four lines, all of the same length. The opposite lines are parallel. All four angles are 90 degrees each.
A square!
square,
take, for an example, a duck. This is a 3d shape because it has three dimensions. Compare this to a square, which is 2d. the difference is that the duck has a beak, and the square does not.
Square
a square does
A square
square
a square
4
All pyramids are square based. It is a 3-dimensional solid object. It consists of four triangular faces, coming to a point, set on a square base ( 5th face). Any solid object that is NOT squared based is NOT a pyramid. e.g. A Tetrahedron. A triangular base, with three triangular faces.
equilateral square or triangle