In graph theory terms, what is a tree?
A graph in which at least one vertex is connected by an edge to every other vertex.
A graph in which every vertex is connected by an edge to every other vertex.
A connected graph in which every edge is a bridge.
A connected graph in which no vertex has a degree higher than $2$2.
Which of the following statements about trees are true? Select all that apply.
The following questions relate to spanning trees.
Consider the following graphs.