See attached..all I know is that each tick mark represents 6...
Thanks all the help I could get would be great!!!
well the line passing from one point through the triangle to the base of another side can be calculated using pythagoras theorem
12^2 - 6^2 = (x+y)^2
x+y = sqrt(108)
the gravity point (where all the internal lines meet) is always 2/3 from the apex or 1/3 from the base
y = (2/3)sqrt(108)
x = (1/3)sqrt(108)