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Elements of geometry : containing books I to III (1886)
Smith, J. Hamblin · Toronto : W.J. Gage · leaf 151
_ OBP is a right angle,.. _ OPB is less than a right angle, I. 17. and .-. OP is greater than OB. I. 10. Hence P is a point withou th • ABC. F - Tn th^ same wav it may be shewn that every point in 7or U2£ produced in tither direction, except the point B, \\-■without the • : DE is a tangent to the r… … Let A be the given pt., without the • />< D.Take 0 the centre of © BCD, and join OA.Bisect OA in E, and with centre Sand radius EO describe© ABOD, cutting the given • in B and /. Join AB, AD. Tins, an tangents ■<> the 0 BCD.Join £0, ££.Then v <>E=BE, .: l 0BE= l BOE ; I. a. .-. z…Geometry
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