In geometry, a
A cross section is the shape made by cutting straight across an object. The cross section of this object is a triangle ... .. it has the same cross section all along its ...
May 20, 2016
So no curved surfaces: cones, spheres and cylinders are
In elementary geometry, a polyhedron (plural polyhedra or polyhedrons) is a
solid in three ... Cubes and
A polyhedron is a space figure each of whose faces is a polygon. In other words,
a ... Video