1.

Two circles C-1 and C-2 touch each other internally at P. Two lines PCA and PDB meet the circles C-1 in C, D and C-2 om A, B respectively. If a BDC = 120°, then the value of a ABP is equal to :

A. 60°
B. 80°
C. 100°
D. 120°
Answer» B. 80°


Discussion

No Comment Found