A dad has been left stumped by his seven-year-old son's homework question, taking to social media to ask for help as he claims it's too tricky for adults, let alone children ...

Do you think that all 3D shapes have the same number of vertices and faces? Test the theory - count the faces, vertices and edges of these 3D shapes.

Finally, one more user added: "Primary teacher here! For HAS you'll count edges, faces and vertices. 3D shapes have edges (not sides), so your child would use a marker to draw over every edge.

Do you think that all 3D shapes have the same number of vertices and faces? Test the theory - count the faces, vertices and edges of these 3D shapes.