Construis la bissectrice des angles $\widehat{WXY}$ et $\widehat{WZY}$.

W

X

Y

Z

A = (-5, 6)
B = (4, 5)
a = Segment(A, B)
C = (5, 0)
b = Segment(B, C)
D = (-4, -1)
c = Segment(C, D)
d = Segment(A, D)