An elementary treatise on modern pure geometry (1893)
Lachlan, Robert · London, New York, Macmillan and Co. · leaf 244
rawn through a point 0, making equa,langles with each other, and if any other straight line cut them in the pointsL, M, y, show that Oil. 0N+ ON. OL+OL. 0M=0. Ex. 5. Show that if four points A, B, C, D on a circle be such thatAB and CD are conjugate lines with respect to the circle, the inverse… … o-o points A, B and C, Z), respectively ; and if the line joining the centres of theinverse circles cut them in the points A, B; and CD; show thatAC.BD : AB. CD=AC. BD : AB. CD, 15—2 228 POWER RELATIONS where the points A, B, C, D are supposed to occur in the same order as thepoints A, B, C,D…
Geometry
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