graph = {'A': [('B', 32), ('D', 117)], 'B': [('C', 37)], 'C': [('D', 48)],
    'D': [('E', 56)], 'E': [('F', 84)], 'F': [('A', 103)]}
I want to create headings relative to a single point from a list of points with angles between the points. Is there a function for this?