To make an icosahedron, create a template with 20 attached triangles, then fold the sides and glue the triangles on their edges to make the figure. An icosahedron is a geometric figure with 20 faces, 30 edges and 12 vertices.Continue Reading
The icosahedron figure is one of five platonic solids. In this figure, five triangles meet at each vertex. The other four platonic solids are:
To make a icosahedron, one needs only a few supplies. A sheet of paper, pencil, template, scissors and glue or tape.
Step 1: Trace the template
Place the template on a sheet of plain paper and trace around it. Be sure to mark the fold lines.
Step 2: Cut out and fold the figure
Use a pair of scissors to carefully cut out the figure from the sheet of paper. Fold along the indicated fold lines, along the edges of each triangle. If desired, color the triangles to make the shape more decorative.
Step 3: Glue or tape the edges
Use a small bead of glue or clear tape to secure the open edges of the figure.Learn more about Shapes
While there are several main types of classifications, triangles are typically classified by the measure of their interior angles or the number of equal sides. Each of these classifications has three types of triangles.Full Answer >
Although, in general, triangles do not have special names for their sides, in right triangles, the sides are called the hypotenuse, the opposite side and the adjacent side. The names change depending on which angle is the focus angle.Full Answer >
Pyramids are three-dimensional tetrahedrons with a base, which can be rectangular or triangular, and corresponding sides comprised of triangles that meet at a single apex. Thus, because there are multiple kinds of pyramids, there are multiple pyramid-shaped or pyramid-like objects in and around the household.Full Answer >
To make a four-sided pyramid out of cardboard, simply attach four triangles to the sides of a square, and then fold the triangles up and secure them at the apex. Lay all the pieces out and tape them together, and fold them together as the final step.Full Answer >