Question 5
A polyhedra is a three-dimensional solid with flat faces, straight edges and vertices. Models of polyhedra are made from flat diagrams drawn on a board. On the diagram the faces are all connected, and one makes a model of it by folding the board along the lines of the diagram. A regular tetrahedron has two different diagrams as shown below:
Which diagram from options (A)–(E) is NOT a flat diagram of a cube?
Which diagram from options (A)–(E) is NOT a flat diagram of a cube?
