The locus (the set) of the points equidistant from the two given intersecting lines is the bisector of the angle formed by the lines. More exactly, the two given intersecting lines form 4 (four) angles in the plane, so the locus (the set) of the points equidistant from the two given intersecting lines are 4 (four) bisectors of the 4 (four) angles formed by the lines. These bisectors, in turn, form two straight lines.