Quote:
Originally Posted by Ankost
Similar triangles' approach
1. ratio 2/a is the same as b/2, a=4 2/4=b/2 b=1 D=4+1=5 Suff.
2. ratio b/2 is the same as 2/a, b=1 1/2=2/a a=4 D=4+1=5 Suff.
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Can you help to explain why the ratio is not taken as 2/a = 2/b?
Somebody please help to explain this .... not clear with similar triangle concept ...