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 polyhedron. Here is the net of a triangular prism.

A renowned UFO investigator claims to have debunked the US Navy footage of pyramid-shaped objects flying off the coast of California — saying it “in every way matches a plane.”. Mick West ...

Also, a triangular pyramid shaped structure about 500 feet away from it that is 120 ft wide," he wrote. An alien-hunter spotted the bizarre 'structures' on the surface of Mars ...

Scientists have discovered a hidden passage inside Egypt's Great Pyramid. The find is part of a seven-year international research mission. Egypt's Tourism and Antiquities Minister Ahmed Issa told ...

Get facts, photos, and travel tips for Chichen Itza, a World Heritage site in Mexico, from National Geographic.

Two new pyramid complexes may have been discovered in a satellite survey of Egypt. The potentially important sites, standing 90 miles apart, are made up of unusual-shaped mounds, according to ...

Researchers may have "stumbled" on two possible pyramid complexes in Egypt, with the help of a satellite imagery survey by Google Earth. Satellite archaeology researcher Angela Micol of Maiden, N.C.