In the given figure, AB, EF and CD are parallel lines. Given that EG = 5 cm, GC = 10 cm and DC = 18 cm, then EF = ?? 
2026-05-05 02:29:29.1777948169
A question on similar triangles......
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Two triangles $GEF, GCD$ are similar.
Hence, you'll have $$EG : CG=EF : CD.$$