Tri-force circuit/resistor problem

1. The problem statement, all variables and given/known data
See this image: http://ift.tt/1dcVSEo
I need to find the equivalent resistance of this circuit, I can find the amps/voltage drop myself but I don”t understand how to distinguish between parallel and series in this kind of circuit.

2. Relevant equations
Ohm’s Law: I (amps) * R (resistance) = V (voltage)
Volt = E/Q (energy / charge)
Resistance = (p (roe/resistivity) * length)/ area
R^-1 = r1^-1 + r2^-1

3. The attempt at a solution
I don’t have a good attempt to show, but It must have something to do with eliminating the inside triangle to make it a series.

Here’s my idea :http://ift.tt/1eRWs6Y

http://ift.tt/1dcVSEv

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