Proceedings of the Edinburgh Mathematical Society

1-cycle A₁ algebra angle axes axis B.Sc bisects centre circles of Apollonius circonférence circumcircle co-ordinates common concyclic condition conic conique constant corresponding curve denote diameter droite Edinburgh EDINBURGH MATHEMATICAL SOCIETY equal equation fluid function geometrical given gives harmonic Hence inscribed integral intersection inverse involution locus magnet Mathematical memoir method mid point middle point nine-point circle obtained orthocentre parabola parallel pedal triangles pencil permutations perpendicular plane prime Professor proof quadrilateral quantities quaternion R. E. ALLARDICE radical axis radius ratio reference respectively result roots rotation solution square straight line suppose surface symmedian symmedian point symmetrical symmetrical groups tangent theorem tion triangle ABC vector velocity vortex vortex ring vorticity Wallace line δε