By Austin Holbrook
Solid Geometry is the geometry of three-dimensional space .
A polyhedron is a three-dimensional solid figure in which each side is a flat surface.
Non-Polyhedra:if any surface is not flat, it is a polyhedron.
Prism: A solid object that has two identical ends and all flat sides.
A pyramid is A solid object where:
* The base is a polygon (a straight-sided shape)
* The sides are triangles which meet at the top (the apex).
It is a polyhedron.
This is a square pyramid, but there are also triangular pyramids, pentagonal pyramids, and so on.
Cone: A solid (3-dimensional) object that has a circular base and one vertex
A cylinder is A solid object with:
* two identical flat ends that are circular or elliptical
* and one curved side.
It has the same cross-section from one end to the other.
A sphere is A 3-dimensional object shaped like a ball
A torus is A 3d shape made by revolving a circle about an axis that is in the same plane as the circle.
A net is A pattern that you can cut and fold to make a model of a solid shape.
Definition of a net: http://www.mathsisfun.com/definitions/net.html
Definition of a torus: http://www.mathsisfun.com/definitions/torus.html
Definition of a sphere: http://www.mathsisfun.com/definitions/sphere.html
Definition of a Cylinder: http://www.mathsisfun.com/definitions/cylinder.htm...
Definition of Solid Shapes: http://www.mathsisfun.com/geometry/solid-geometry....