That is a rectangular solid.
Hexagon
A pyramid has the solid quadrilateral pyramid solid shape.However there are also pyramids with geometrical polyhedra/platonic solid shapes of tetrahedron.
The geometric shape of a tepee is a cone :)
A triangle is a geometric shape.
A net for a geometric solid is the 2-D pattern for constructing the 3-D shape.
That is a rectangular solid.
crystal
A crystal.
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.
Hexagon
A solid object has a definite volume and geometric form. Solids have tightly packed particles that do not conform to the shape of its container.
a sphere
I think you are referring to a crystal.
The pyramid is made in the geometrical solid shape of quadrilateral pyramid.However there are some geometrical polyhedra/ platonifc solid shapes of tetrahedron
A pyramid has the solid quadrilateral pyramid solid shape.However there are also pyramids with geometrical polyhedra/platonic solid shapes of tetrahedron.
geometric solid