EIGRP feasible successor

Hi Expert
I noticed a question about EIGRP successor. Please see the picture below. Router 1 is source and Router 2 is destination. Let us define the length of cable represents value of metric. Apparently, R1 to R2 is successor, and R3 is feasible successor. R5 cannot be feasible successor. Based on the concept of feasible successor, R4 should be feasible successor because R4-R2 is shorter than R1-R2. But R1-R4-R2 is longer than R1-R5-R2. Do you still think R4 could be feasible successor ? Thank you.

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Don JohnstonConnect With a Mentor InstructorCommented:
Given the parameters, I would say yes.

But this is ripe for one of those optical illusions where a line looks shorter when it actually isn't. :-)
EESkyAuthor Commented:
Thank you for your fast reply. You are right.
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