Question: User: please create a video solving a question in graph theory: let G=(V, E) be a connected, bipartite graph and a r-regular graph. denote V=A \dotcup B. we need to show that G is 2-connected. I'm stuck at this exercise for hours now. I already proved that |A|=|B|. now, please Help. feel free to use one of the following methods to solve this problem: 1. the 2-connected graph characterization theore: let G=(V, E) be a graph. the following are equivalent: 1. G is a 2-connected graph. 2. any a \neq b \in V are in a common shared simple cycle. 3. \forall a \neq b \in V, there 2 internally disjoint (a, b)-paths. 4. \forall e \neq f \in E: there exists a simple cycle that contain both e and f. 2. if G is 2-connected graph, then \forall v' \in V: G \setminus {v'} is still connected. please use a lot of visualization.