D is a point on the side BC of a ABC such that AD bisects BAC. Then
(A) BD = CD
(B) BA > BD
(C) BD > BA
(D) CD > CA
[A]
Solution.
BC is the side of ABC, D is the point on side BC.
In ABC,
BAD = CAD (Given that AD bisects ÐBAC)
In ADC,
BDA > BAD ( Exterior angle of triangle is greater than interior opposite angle)
BAD = CAD
Then BA > BD ( Side opposite to greater angle is longer)
Hence option (A) is correct.