2D shapes have sides and corners. A rectangle has 4 straight sides and 4 corners. A square is a special type of rectangle, where all 4 sides are the same length. Why not see how much you know ...

There’s no “perfect” or “better” body shape, experts agree — yet you still might find yourself wondering what your body shape is and what it says about your health, if anything.

The other four faces are all triangles. The shapes with 8 vertices are the cube and the cuboid. The cube has 6 faces all the same, but the cuboid has different faces.