### secondary regional 2017

Posted:

**Mon Dec 11, 2017 3:48 pm**The Official Online Forum of BdMO

https://matholympiad.org.bd/forum/

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Posted: **Mon Dec 11, 2017 3:48 pm**

Posted: **Tue Feb 13, 2018 8:47 pm**

$\frac{AE}{EC} \times \frac{DC}{DB} \times \frac{BF}{AF}= \frac{1}{3} \frac{2}{1} \frac{3}{2}=1$ So, check **Ceva's Theorem**