A 3D shape with all straight edges and flat faces is a polyhedron. Other 3D shapes with least one curved surface are not polyhedra. A 3D shape with regular polygonal faces, meeting at equal angles, is ...

There’s a new brainteaser circulating the web and it’s all about shapes. The mind-boggling quiz features a variety of hidden triangles and hexagons, but it’s so tricky that only 1% of people get a ...

The net of a 3D shape is what it looks like if it is opened out flat. There are many types of nets for the different 3D shapes. A net is made from polygons that can be folded and joined to make a ...

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