Answer:
circumcenter
Explanation:
Suppose the three food trucks points a,b,c are joined together in such a way that the form a triangle. The perpendicular bisectors of the triangle are concurrent . The point of concurrency is called circumcenter.
According to the circumcenter theorem the points ( vertices of the triangle a,b,c) are equidistant from the center D ( point of concurrency) called the circumcenter.
As the food distributor is equidistant from each of the trucks it lies at the circumcenter point of concurrency.
The drawing is just a generalizations to give an idea. It does not show actual bisectors perpendicular.