Equilateral triangles are also equiangular -- that is, all three internal angles are also equal to each other, with measures of 60 degrees each.
See also trigonometry.
... 45 to 64, and 13.9% who are 65 years of age or older. The median age is 38 years. For every 100 females there are 94.9 males. For every 100 females age 18 and over, there ...