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Published online by Cambridge University Press: 20 January 2009
1. To designate the line which bisects at right angles the join of two points A, B, the term axis of A, B is proposed. Reasons:—
(1) brevity; (2) avoidance of the suggestion that the line joining AB is necessary in constructing it (important in teaching Geometrical Drawing); (3) two points, like any other pair of circles, have a radical axis which is the line in question.