C:\Users\15063\Documents\Nine-Point

A = (-4.28, 1.5)
B = (-6.4, -1.48)
C = (-2, -2.34)
p = -0.3 (slider from -5 to 5)
q = 0.5 (slider from -5 to 5)
r: 1 - p - q
D: (p * A) + (q * B) + (r * C)
eq1 = TriangleCurve(A, B, C, ((q * r) * A^(2)) + ((r * p) * B^(2)) + ((p * q) * C^(2)) - (((p * (q + r)) * B) * C) - (((q * (r + p)) * C) * A) - (((r * (p + q)) * A) * B) = 0)
L = 1 (slider from -5 to 5)
l: p + q