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  Each set of our precision die-cast aluminum polyhedra models includes all five Platonic solids and three Archimedean solids. |
  Ignite the polyhedral passion within your visitors by displaying one of polyhedra posters in your home, workplace, or school. |
  Show off your mathematical bent with one of our comfy T-shirts. Four designs and six sizes are available. |
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  Graph mathematical formulas with ease and confidence using GrafEq. Shown above is y=x2 and the intersection of y<x2 and cos5(x2+y2)=0. |
  Explore virtual polyhedra onscreen and build paper polyhedra from print-outs with Poly. Other 3D software can use models exported from Poly Pro. |
  Seamless tessellations in the plane and other surfaces are at your command with Tess. Doves, by Marc Angstadt, from our 2004 contest is shown here. |
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  Don’t waste your bandwidth and your visitor’s time—optimize your animated (and still) GIFs! (!) Work on them one-at-a-time with A Smaller GIF or in batches with COGS. |
  If you’d like to quickly make animated software demonstrations or simple reports from screen captures, take a look at Gif·gIf·giF—our pioneering animated GIF program. |
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