A Course of Pure Geometry

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CHAPTER
1
Medians
8
Poles and polars 13 34422
15
Common tangents of two circles
22
CHAPTER III
28
Isogonal conjugates
36
Projection of angles into angles of given magnitude
42
Twentyfour crossratios reducible to
47
Equiconjugate diameters
156
THE HYPERBOLA
163
Director circle
169
Circle of curvature
187
Perpendicular diameters
193
CHAPTER XV
201
CHAPTER XVI
210
Involution range on a conic
216

Projective properties
92
Parallel chords
95
Diameters and ordinates
106
The Normal
113
Circle of curvature
120
CHAPTER XI
126
Parabola escribed to a triangle
132
Circle of curvature
138
CHAPTER XII
144
Pair of tangents
150
Involution properties of quadrangle and quadrilateral
224
Reciprocation applied to conics
228
Coaxal circles reciprocated into confocal conics
234
CHAPTER XVIII
242
Two triangles circumscribing a conic
248
CHAPTER XIX
256
Feuerbachs theorem
262
Figures directly similar but not homothetic
270
MISCELLANEOUS EXAMPLES
276
INDEX 285

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