Tuesday, November 24, 2009

Prisms, pyramids and Euler's formula

Today we counted the number of faces, edges and vertices of prisms and pyramids, and checked our work with Euler's formula ( Vertices - Edges + Faces = 2 ).
E Block came up with a saying to help remember the formula: Visitors Empty food but add Fun. Hopefully that's helpful!

Homework:
Ws. Identifying 3-Dimensional shapes. Name each shape, then count the number of faces, edges and vertices in each one. Use Euler's formula to check your accuracy.