Sentence:  For any pencil in a plane containing a * * f-fold secant of \ g <WSD>has</WSD> an image regulus which meets the plane of the pencil in * * f lines , namely the images of the lines of the pencil which pass through the intersection of \ g and the multiple secant , plus an additional component to account for the intersections of the images of the general lines of the pencil . 
Meaning of the word marked with <WSD> tags:  have as a feature