Sure, let's fill in the blanks to form a true statement about graph theory:
If there is at least one edge connecting two vertices in a graph, the vertices are called adjacent.
A sequence of such vertices and the edges connecting them is called a path.
If this sequence of vertices and connecting edges begins and ends at the same vertex, it is called a cycle.
So, the final statement is:
If there is at least one edge connecting two vertices in a graph, the vertices are called adjacent.
A sequence of such vertices and the edges connecting them is called a path.
If this sequence of vertices and connecting edges begins and ends at the same vertex, it is called a cycle.