In Fig. 4.57, AE is the bisector of the exterior 
meeting BC produced in E. If AB = 10 cm, AC = 6 cm and BC = 12 cm, find CE.
AE is the bisector of ∠A
∴ 12+X/X=10/6
10X=72+6X
10X-6X=72
4X =72
X=72/4
X=18
2
In Fig. 4.57, AE is the bisector of the exterior meeting BC produced in E. If AB = 10 cm, AC = 6 cm and BC = 12 cm, find CE.
AE is the bisector of ∠A
∴ 12+X/X=10/6
10X=72+6X
10X-6X=72
4X =72
X=72/4
X=18