3/26/12 Aim: How do we indentify solids?

   How do we identify solids?


 Solid geometry
- solid geometry is the geometry of a 3 dimentional space that has width , height and lenght
Examples:

Properties
-solids contain properties such as :
     - Volume ( how much water the container holds )
     - surface area ( the area you have to paint)
There are two main types of solids : Polyhedra & Non- Polyhedra
polyhedra - must have flat faces
Example : prisims, pyramids ect...

Non-polyhedra - has no flat faces of surfaces
Examples:  spheres, cones, cylinders ect...

Cross sections
- a cross sections is the shape that you get when you cut straight across a a figure or object







                                                Citations
Keppleri, Ioannis Constructability and Congruence , Harmonices MVNDI, http://wlym.com/~animations/harmonies/site.php?goto=congruence.html , 2006

Rock cycle minerals pre-lab, http://msnucleus.org/membership/html/k-6/rc/minerals/3/rcm3_1a.html

Mifflin, Houghton, Math Background, http://www.eduplace.com/math/mw/background/3/07/te_3_07_overview.html