This instance is from Wikipedia and should be reused beneath a CC BY-SA license. Considering the fact that a cuboctahedron has a circumradius divided by edge size equal to at least one, the triangles has to be taller than equilateral to make a positive top. From Wikipedia But watch out! https://sergiogixjv.blue-blogs.com/43673470/the-basic-principles-of-tall-boss-run