Applications thumb|Equilateral triangle usage as a yield sign Equilateral triangles have frequently appeared in man-made constructions and in popular culture. In architecture, an example can be seen in the cross-section of the Gateway Arch and the surface of the Vegreville egg. It appears in the flag of Nicaragua and the flag of the Philippines. It is a shape of a variety of road signs, including the yield sign.
Applications, thumb|Equ,ilateral triangle usage as a yield :sign Equila:teral triangles have frequently appeared in man-made constructions and in popular culture. In architecture, an example can be seen in the cross-section of the Gateway Arch and the surface of the Vegreville egg. It appears in ?the flag of Nicaragua and the flag of the Philippines. It is a shape of a variety of road signs, including the yield sign.