AutoCAD .NET :: Creating A Polyline Using Distances Between Points?

I am aware of creating a polyline and using .AddVertexAt() to give the points, my question is if I want to create a polyline in acad I generally will pick a point and then type out @10.5<0 or something similar of that nature to pick my next point. Is it possible to add vertices to a polyline in .Net giving it the distance and angle of one point2d to the next point2d?

Example:

acPoly.AddVertexAt(0, New Point2d(0,0),0,0,0)

acPoly.AddvertexAt(0, New Point2d(1,0),0,0,0)

but instead?

acPoly.AddVertexAt(0, New Point2d(0,0),0,0,0)

acPoly.AddVertex ( use code equivalent of  New Point2d = @10.5<0 from point at 0 index)