A football is a round ball made up of small hexagonal pieces. A perfectly round ball paired with a piece of flat leather is a geometric trick. In the year 18 AD, an engineer named Buckminster Fuller made a huge sphere by assembling triangular pieces of the same size made of metal. These spheres support each other on all three sides of the triangle.
Such a hemisphere becomes a huge dome. This dome does not even need the support of a pillar. This dome is called the Geodesic Dome. It also houses a sports stadium. The Earth Dome is world famous for its space at Disneyland in Florida. Planetariums and observatories are shaped like geodesic domes.
The climatrin greenhouse in the Missouri Botanical Gardens, USA is shaped like a geodesic dome. It has a diameter of 5 meters and a height of 21 meters. It is made up of hexagons of aluminum rods. Japan's Fukuoka Dome, the largest in the world, has a diameter of 215 meters. It can seat 21 spectators and enjoy sports and programs.
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