A geodesic icosahedron, the Times Square New Year's eve ball

Image by kjpargeter on Freepik 

It's a gorgeous ball, covered with Waterford Crystal triangles, shaped as a geodesic icosahedron.  Every New Year's Eve it descends in Times Square to mark the beginning of the new year.  Students can take a closer look at this construction and use our drawings to experiment with slicing an icosahedron in order to discover how this shape is formed. 

For Adventurer members, we have an editable Word docx and solutions with diagrams.