
problem
Classifying solids using angle deficiency
Toni Beardon has chosen this article introducing a rich area for
practical exploration and discovery in 3D geometry
Here are four cubes joined together. How many other arrangements of four cubes can you find? Can you draw them on dotty paper?
Here are the six faces of a cube - in no particular order. Here are three views of the cube. Can you deduce where the faces are in relation to each other and record them on the net of this cube?