Angle unit Grads [0...200] Degrees [0...180] Arcminutes [0...10800] Arcseconds [0...648000] DegMinSec [0...180] Radian [0...π ] Turns [0...½ ] Note
F = area of the triangle u = perimeter of the triangle r = radius of inscribed circle R = radius of circumcircle
If the foot of an altitude is outside a side, one part p or q of this side will be given negative.