1. The problem statement, all variables and given/known data Determine the resultant resistance of the infinite circuit made up of ##1 k\Omega## resistors shown in the figure between points A and C, and between points A and B. 2. Relevant equations 3. The attempt at a solution I can find the equivalent resistance between A and C. In this case, I can remove the middle branch of resistors originating from B but I am clueless about finding the equivalent between A and B, I can't see the repeating unit here. Any help is appreciated. Thanks!