What is the shadow obtained when a Rubik Cube is kept exactly below the glowing bulb?
(a) Can a polyhedron have 10 faces, 20 edges and 15 vertices? Justify your answer. (b) A glowing bulb is kept above the following solids. Name the shape of the shadows obtained in each case. Attempt to give a rough sketch of the shadow. [4 MARKS]
When a torch is pointed towards one of the vertical edges of a cube, you get a shadow of cube in the shape of