# 3D Geometry

### Braxton Flowers Mrs.stancher 3rd period

Solid Geometry is the geometry of three-dimensional space, the kind of space we live in ...

A polyhedron is a three-dimensional solid figure in which each side is a flat surface. These flat surfaces are polygons and are joined at their edges. The word polyhedron is derived from the Greek poly (meaning many) and the Indo-European hedron (meaning seat or face).

Non polyhedron is a solid with curved side or a mix of curved and flat sides.

A prism has flat sides and the same cross section all along its length

A solid object where:

* The base is a polygon (a straight-sided shape)

* The sides are triangles which meet at the top (the apex).

A cone is a solid (3-dimensional) object that has a circular base and one vertex

Cylinder a solid geometric figure with straight parallel sides and a circular or oval section.

A 3-dimensional object shaped like a ball.

Every point on the surface is the same distance from the center.

**Torus** Cylinder Cone Prisms Polyhedron Platonic Solids

Net is a pattern that you can cut and fold to make a model of a solid shape.