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it has 20 faces and 12 vertics
It has 20 faces.
An Icosahedron has 20 triangular sides. yay
Icosahedron are a shape with 20 faces, 30 edges and 12 vertices. All the faces are triangles.
Look up on line in the Free Dictionary by Farlex. Shows a picture of the 20-sided icosahedron in which it appears that the top and bottom have 5 sides each and the center has 10 sides.