Yesterday with my friends Dan and Alan.
"LOOK! I'm telling you, a pyramid has 5 faces! 4 around, and one on the bottom!"
"It's not! It's 4 faces! There's three around and one at the bottom"
This wasn't intended satirically, we were actually shouting this yesterday.
Apparently, Pyramids can have 4 or 5 faces.
Which makes it totally pointless!
Wait... Isn't one with 3 sides around and one on the bottom a tetrahedron? and a pyramid HAS to have a square base... Right?
I assume you mean a regular tetrahedron, altought a tetrahedron is just a polyhedron with 4 triangular faces, also, it is a pyramid. Pyramids can have any number of faces as long as they are equal to, or, greater than four. So, the side faces, (let's call the total number of faces n), of a pyramind are always n-1, when n=4 or n>4. Also, the number of edges on the base face is always equal to number of side faces. When n gets big enough, the pyramid will start to resemble a cone, and the base face will start to resemble a circle, although, theoretically you only achieve a real cone as n aproaches plus infinity. So, that being said, the tetrahedron is a pyramid like any other, and, if i'm not tistaken, the simplest one. Hope this clarifies.
As for that thread itself, i'm always arguing about stupid shit with my brother.