Text-book of Euclid's elements for the use of schools : books I - VI and XI (1900)
Hall, H. S. (Henry Sinclair), 1848-1934, Stevens, F. H. (Frederick Haller), 1853-1933 · MacMillan : London · leaf 473
It has eight faces, six vertices, twelve edges. (iii) The polyhedron of which each solid angle is formed byfive equilateral triangles is called a regular icosahedron.
Geometry · Mathematics
Internet Archive · UBC Library · Public Domain Mark 1.0. Free to use for anything.
