Godfrey, C. (Charles), 1873-1924, Siddons, A. W. (Arthur Warry) joint author · Cambridge, University Press · leaf 55
and NP, the radius of 0PDa = |aP = |^SA = -|R. (iv) It has been shown that the circle whose centre is N, the mid-point of SH, and whose radius is ^R, passes through the foot of one altitude, the mid-point of one side, and the mid-point of HA. By similar reasoning this circle may be shown to pass… … THE TRIANGLE 37 Ex. 102. The eiroumoirele of A ABC ia the 9-points circle of A Ii Ij I3.Ex. 103. The circumoircle bisects each of the 6 lines joining pairs ofthe points I, Ij, Ij, I3. Ex. 104. If O be equidistant from Ij, I2, I3, then S ia the mid-pointof 01. Ex. lOS. What is the 9-poiuts eirele of…
Geometry, Modern
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