The 4 Side Faces are Triangles. And thanks to the Internet its easier than ever to follow in their footsteps or just finish your homework or study for that next. Play with it here.
Altitude - the perpendicular distance between the bases of a frustum of a regular pyramid.
Thats the option that we used as a pyramid in. It has 5 Faces. The Math-Pyramid - Integers. Slant Height - the distance measured along the lateral face of the frustum.