Icosahedron from triangular flat unit ( Tomoko Fuse)

This is a modular icosahedron consisting of 50 units, where 20 of the units are equilateral triangular flat units. This variation unit is in the Unit Polyhedron Origami book of Tomoko Fuse. Paper: 7 x7 cm, 20 units (to form faces of the icosahedron) Paper: 3. 5 x 3. 5 cm, 30 units (edges: to join the faces of the icosahedron) Total: 50 units Instagram: mathsoforigami , origami, origamitutorial, origamicraft, paperfold, paperfolding, math, cube, cubecraft, sonobecube, modularorigami