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The side splitter theorem
1.
In ∆ABC, DE is parallel to side BC. Find the length of CE if
AD = 9, DB = 5 and AE = 6.

2.
In the figure above, Find the length of CE if AB = 12, DB = 4 and AC = 9.
3.
∆ABC and ∆ACD have a common side AC. EF || BC and EG || CD.
Prove that
AF / FB = AG / GD
