Delta resistors:
Delta resistor between two terminals = Sum of the two star resistors + (Product of those two / the third star resistor). star delta transformation problems and solutions pdf
RAB=R1+R2+R1⋅R2R3cap R sub cap A cap B end-sub equals cap R sub 1 plus cap R sub 2 plus the fraction with numerator cap R sub 1 center dot cap R sub 2 and denominator cap R sub 3 end-fraction Delta resistors: Delta resistor between two terminals =