Construct the models Nets are two -dimensional patterns that fold into 3-dimensional shapes ,so they are a great tool for analyzing and constructing solids .Use the tetrahedron .octahedron and the icosahedron tools to help you examine each shape more closely, and to practice folding each net into a solid. 2. Using the link on the activity page ,cut out each net. Fold and tape each net into a three-dimensional solid. Your solids do not need to be perfect. (9 points :3 points for each solid )