In this task, we ask you to rewrite a sentence in simple English without changing its general meaning. Essentially, you want to make the sentence easier to read by using simpler words, utilizing more straightforward sentence structures, and omitting non-essential information etc.

In geometry , a cuboid is a convex polyhedron bounded by six quadrilateral faces , whose polyhedral graph is the same as that of a cube .
Cuboids have six faces , which form a convex polyhedron .