Monday, April 16, 2012

Week 4: Polyhedrons and Surface Areas

I hope my last post was helpful in understanding the material we covered in class this week. It seemed like you all were getting the hang of perimeters and areas rather quickly, and so we were able to step into the third dimension and cover surface areas. Here is a link that will refresh what you learned in class this past week, including the equation we touched on in order to find the number of faces, edges, and vertices on a polyhedron.

For this week's assignment, use this awesome web tool to make nets of polyhedrons, and list the polygon equations necessary to find the surface area.

This is what a net of a cube looks like (if you are unsure of what a net is):

 Here is a list of possible polyhedrons you can use for this assignment:

  • cuboctahedron
  • truncated octahedron
  • truncated cube
  • rhombicuboctahedron
  • snub cube
  • icosahedron
  • dodecahedron
  • icosidodecahedron
  • triangular prism
  • trapezoidal prism
  • pentagon prism
  • hexagon prism
I know this looks like an intimidating list, but with a quick copy and paste, you will be able to figure out what these images look like. Also, I don't intend you to use the whole list, as I will describe in what will be due.


This week's goal:
  • Familiarize yourself with different polyhedrons, and their properties
  • Be able to construct three dimensional objects
  • Recognize polygons as parts of polyhedrons

Due date:
  • Choose three polyhedrons from the list above, and hand in the net with the list of equations to find the surface area. This will be due on test day, which the specific date the test will be on is going to be decided in class next week.

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