A cylinder.
A 2d shape is a flat object (ex: square, circle, etc.) and a 3d shape is a shape in space (ex: cube, sphere, etc.)
It is a volume (3D) shape - "solid" has nothing to do with it.
A solid
A 3D star is not a standard shape. You can easily add another point.
Yes it is. Anything that is 3D is usually a geometric solid. (Think)
A cylinder.
A 2d shape is a flat object (ex: square, circle, etc.) and a 3d shape is a shape in space (ex: cube, sphere, etc.)
That is a rectangular solid.
crystal
It is a volume (3D) shape - "solid" has nothing to do with it.
A solid.
A solid
A crystal.
A 3D star is not a standard shape. You can easily add another point.
Polyhedra. AS long as the 3D shape has no curves
Describing a geometric solid with only two dimensions may not provide a complete representation of its shape and structure. A geometric solid is best described in three dimensions to convey its full volume, surface area, and shape.