Thanks for the explaination, Fred.I did wonder about the cylinder, but you (or he or anyone) could have gotten the others past me easily. I did poorly in algebra, so they never let me take geometry (in which I probably would have done well).
Maybe he could have his basic shape cards (circle, triangle, etc) and then a couple 90 degree angle cards.
--Kimberly
On 9/18/07, Fred Poutre <cloven-fruit@xxxxxxxx> wrote:
Well, good idea, but not mathematically correct.
Many 3 dimensional object can be defined by the two dimensional shapes that when intersected at a 90 degree angle create the object.
A pyramid is the result of two triangles intersected at a 90 degree angle.
A cube is the result of a two squares intersected at a 90 degree angle.
A sphere is the result of a two circles intersected at a 90 degree angle.