if a line intersects ab and ac of triangle abc at d and e prove that ad/ab=ae/ac
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if DE is ll to BC
AD/DB=AE/EC(by bpt)
DB/AD=EC/AE(using invertando rule)
DB/AD+1=EC/AE+1(using componando rule)
AB/AD=AC/AE
AD/AB=AE/AC(using invertando rule)
AD/DB=AE/EC(by bpt)
DB/AD=EC/AE(using invertando rule)
DB/AD+1=EC/AE+1(using componando rule)
AB/AD=AC/AE
AD/AB=AE/AC(using invertando rule)
priyanka045:
hope it helps u
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