Q.

AB and CD are two chords of a circle intersecting at P. Choose the correct statement from the following:

1 ∆ADP~∆CBA  
2 ∆ADP~∆BPC  
3 ∆ADP~∆BCP  
4 ∆ADP~∆CBP  

Ans.

(4)

∠APD=∠CPB [vertically opposite angle]

∠ADP=∠CBP [Angle subtends on the same segment]

∆ADP~∆CBP (by AA similarity)