Tetrahedron

Cylinder, in geometry, is a solid figure with two identical bases that lie on parallel planes. Each base is bounded by a curved edge, called the… See more » Parabola, puh RAB uh luh, is one of the curves most used in science. If a ballplayer hits a high fly, the path of the ball is nearly a parabola.… See more » Mobius strip is a continuous loop with a half-twist in it. You can make a Mobius strip by taking a rectangular strip of paper, turning over one end… See more »