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2026-04-07 07:52:24.1775548344
Prove that: if $\frac{AD}{DE}=\frac{BC}{CF}$ then $AB\|DC\|EF$
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07 Apr 2026 - 7:52
2026-04-07 08:02:24.1775548944
Prove that: if $\frac{AD}{DE}=\frac{BC}{CF}$, then $AB\|DC\|EF$
geometry
triangles
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