Equilateral? I'm reminded of that Native American geometrical proof "The squaw on the hippopotamus is equal to the sum of the squaws on the other two hides" although purists will argue that the hippopotamus is not native to the Americas. It pays not to over-think these things
francois (October 12th, 2018)
neddy3 (October 11th, 2018)
francois (October 12th, 2018)