Teht. 409

c: (x + 3)^(2) + (y - 5)^(2) = 8
d: (x - 9)^(2) + (y - 0)^(2) = 18
A = Center(c)
B = Center(d)
f = Segment(A, B)
C = Intersect(c, f)
D = Intersect(d, f)
etäisyysCD = Distance(C, D)
Midpoint(C, D)
TekstiCD: Name[C] + (Name[D]) + " = " + etäisyysCD