How to make a
The Dodecahedron demonstration
|1/ Cut a pentagon out of card. Drawn in the diagonals to make a smaller pentagon in the centre.||2/ Draw the diagonals across the smaller pentagon, then extend them.|
|3/ Cut out the five triangles at the edges.||4/ Make a second copy of the same shape. Bend and open the card along the edges of the centre pentagon to loosen it up. Put the two shapes together as shown.|
|Wrap a long elastic band around the edges, going in front of and then behind each corner. Release the shapes carefully...||...TA-DAH!|
|There is more about dodecahedrons and other shapes and lumps in Vicious Circles|
The Murderous Maths Home Page
Thanks to Andrew Jeffrey who showed me how to do this!