Esquema
More about 3-D solids
Chapter 9.2 Rotational Symmetry:
Rotational Symmetry of Cube
http://youtu.be/gBg4-lJ19Gg
Rotational Symmetry of Tetrahedron
http://youtu.be/qAR8BFMS3Bc
Chapter 9.3 Font, side and top views:
Cube House
http://www.fisme.science.uu.nl/toepassingen/03377/
Rotating houses
http://www.fisme.science.uu.nl/toepassingen/03378/
Building with blocks
http://www.fisme.science.uu.nl/toepassingen/00724/
