Point A moves on circle o1.

Point C is the projection of A, parallel to line e, onto the fixed line o2.

Point B is the projection of C, parallel to the direction d, makin an angle w (constant) with line AO, on the line AO (O fixed point).

b is the curve representing the geometric locus of B.

The simple case, a generalization of which is the present, is contained in the document:

Simple_Geo_Locus.html .

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