Tetrahedron
Model by Mark Bolitho.
Triangular pyramid composed of four faces.
Folding tips
- Step 18: note that this makes the model three-dimentional; it is not a full valley fold.
Paper & size
When folded from an 18cm square, the model ends up with sides of 7cm length. When standing, the model is about 5.7cm in height and 7cm wide.