[Python] How can I find the following vertice in a shapely polygon in a specific direction...

I have a polygon "poly" and a point "A". With the nearest_point function I can calculate the nearest point "p1" on the polygon to the point "A". Now I would like to determine the next vertice of the polygon to that nearest point in a specific direction. How can I do this?

from shapely.geometry import Point, Polygon
from shapely.ops import nearest_points

poly=Polygon([(0,0),(10,0),(10,11),(0,8)])
pointA=Point(11,5.5)

p1,_=nearest_points(poly,pointA)

p1.wkt
#'POINT (10 5.5)'


So, in this example I would be looking for

poly.exterior.coords[2]
#(10.0, 0.0)


Calculating the closest vertice of "poly" to "p1" doesn't help as the next vertice doesn't necessarily have to be the closest.

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