OK, I found the angle of an Icehouse peak: The peak angle (A) is divided by two, to get two right triangles using the base and half the height, with 1/2A = T (theta). tanT = "opposite over adjacent" = (B/2)/H T = arctan[(B/2)/H] ...so for a large: T = arctan [ (1.00/2) / 1.75 ] = arctan [0.28571428571428571428571428571429] = ~15.95 degrees FYI: A = 2T = 2 * 15.945395900922854797657689523261 = 31.890791801845709595315379046522 degrees (31.90 degrees) That's the peak angle... but we only need theta (T). Knowing T, once can write the formula for Height as: Height = [ (B/2) / tanT ] = [ (Base/2) / tan(15.945395900922854797657689523261) ] = Base / 0.57142857142857142857142857142857 THEREFORE, for any given X pip count, after using this to get Base: Base = (Base of X-1) + 0.21875 ...this will calculate the Height: Height = Base / 0.57142857142857142857142857142857 And, yes, I took my degrees in Liberal Arts majors, too. But I never forgot SOHCAHTOA. ;) David