What are "Triangles" in 3d modeling? In 3d modeling, there is some "triangle count" which determines complexity. I am not sure but I think cubes have 12 triangles or somethong. But I see NONE. They have squares, no triangles! Can someone please help me understand what a triangle is? Where in the cube are these 12 "triangles" located?
A literal triangle, as in 3 vertices connected by 3 edges.

They are the basic building block for any other shape, any polygon can be represented with a set of triangles (called triangulation).