Polyhedron (plural polyhedra)
All three dimensional figures have more faces than a one dimensional figure. There are an infinite number of one dimensional points on a three dimensional figure
A 2-dimensional (plane) projection of a 3-dimensional (solid) figure. Or, for polyhedra it could be a net but that answer would not be applicable to many 3-d figures.
Polyhedra (plural; singular = polyhedron)
A pyramid is a four-sided, three-dimensional figure.
A square is not a three dimensional figure unless it is in the form of a cube.
no it is a 4 dimensional figure not a 3 dimensional figure * * * * * No. A quadrilateral is a two dimensional figure. It has a length and a breadth and no more.
A net is a two-dimensional pattern that you can fold to form a three-dimensional figure.
There is no such thing. A hexagon is a two dimensional figure. A three dimensional figure with six vertices is an octahedron.
Two dimensional object is a plane figure where as three dimensional object is solid (space) figure.