GEOMAG CONSTRUCTIONS Geomag is the brand name of a toy construction system created in 1998, consisting primarily of nickel-plated steel balls (spheres) and short connecting sticks with a magnet on each end (rods). With these two basic elements, a huge number of geometric shapes and structures can be built. Adding panels helps to form rigid structures. Below are three regular polygon constructions. Regular decagon internal to pentagons. 80 pieces: 30 balls, 40 rods, 10 pentagon panels Regular 20-agon internal to squares and pentagons. 140 pieces: 50 balls, 70 rods, 10 pentagons, 10 square panels Regular 30-agon external to triangles and pentagons. 165 pieces: 60 balls, 90 rods, 15 pentagon panels GEOMAG CONSTRUCTIONS by Rafael Millán (1958-2008) See many more constructions at GEOMAG CONSTRUCTIONS http://textodigital.com/P/GG/bagon.php Including polyhedra and other solids, buildings, helices, and more.    Decagon Surrounded by and Enclosing 10 Pentagons Each        20-agon Surrounded by Squares and Pentagons

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