Giant pyramids “three times the size of the Great Pyramid of Giza” have been located 2,000 metres beneath the surface of the dreaded Bermuda Triangle. Conspiracy website Before It’s News claims the ...

A prism has a constant cross-section throughout its length. When the cross-section is a triangle, the prism is called a triangular prism. When the cross-section is a hexagon, the prism is called a ...