20 sides - from the ancient Greek word "eikosan", which means 20. Each side is a triangle. (Think of the 20-sided dice in tabletop-roleplay-games.)
In geometry, an icosahedron is a regular polyhedron with 20 identical equilateral triangular faces.
An icosahedron has 30 edges.
vearice does has a icosahedron have is19
An icosahedron is a 20-sided figure. It also has 30 edges.
20
30
20
3
A regular icosahedron has 20 faces (equilateral triangles), 30 edges and 12 vertices.
20 faces
It has 20 faces
Twenty