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In the given figure, angle 3 and angle 4 are exterior angles of a quadrilateral ABCD at point B and D and angle A =angle 2, angle C = angle 1...Prove that

angle 3 +angle 4=angle 1+angle 2..
Plz answer fast, it is urgent,,



For proof see the attachment  

2 5 2
karthik - do u use web camera to answer this? how do scan notes
i use nokia phone.
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