Simplifying Complex Circuits: Using Delta to Y Transformation

[jisbon]

Homework Statement

Find resistance across a and b terminal

Relevant Equations

-

Not sure what I can do to proceed on here: Should I be using the Delta to Y transformation? Wouldn't be able to simplify using simple series and parallel circuits, and hence am looking for any clues I might need to solve this problem.
PS: ForDelta to Y transformation, it seems that the 10 and 8 ohm resistor seems to be preventing me from doing this way.

 

[gneill]

Points c and f are connected by a wire, hence are in reality the same node. Does that suggest a way forward?

 

[Bright Liu]

Maybe you can solve it like this （In China we called it Current distribution method ）

 

[DaveE]

Homework Statement:: Find resistance across a and b terminal
Relevant Equations:: -

Wouldn't be able to simplify using simple series and parallel circuits

Yes, I think you can. The most difficult problem here is that the schematic is drawn in a confusing way. Redraw it so it makes more sense to you.

@gneill has given you a way forward, pursue that. For example what is the resistance between node e and node cf?