Foreword |
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ix | |
Problems, exercises, circles, and Olympiads |
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ix | |
Why this book, and how to use it |
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x | |
English-language references |
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xi | |
Introduction |
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xiii | |
What this book is about and who it is for |
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xiii | |
Learning by solving problems |
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xiv | |
Parting words |
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xv | |
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Olympiads and mathematics |
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xv | |
Research problems for high school students |
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xvi | |
How this book is organized |
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xvi | |
Resources and literature |
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xvi | |
Acknowledgments |
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xvii | |
Numbering and notation |
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xvii | |
Notation |
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xviii | |
References |
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xix | |
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1 | (38) |
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2 | (2) |
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Suggestions, solutions, and answers |
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3 | (1) |
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2 The center of the inscribed circle (2) |
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4 | (3) |
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Suggestions, solutions, and answers |
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5 | (2) |
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7 | (1) |
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Suggestions, solutions, and answers |
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7 | (1) |
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8 | (3) |
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Suggestions, solutions, and answers |
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9 | (2) |
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5 The orthocenter, orthotriangle, and nine-point circle (2) |
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11 | (2) |
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Suggestions, solutions, and answers |
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13 | (1) |
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6 Inequalities involving triangles (3*) |
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13 | (2) |
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Suggestions, solutions, and answers |
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14 | (1) |
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7 Bisectors, heights, and circumcircles (2) |
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15 | (4) |
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Suggestions, solutions, and answers |
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16 | (3) |
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8 "Semi-inscribed" circle (3*) |
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19 | (6) |
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Main series of problems--1 |
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19 | (1) |
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Main series of problems--2 |
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20 | (1) |
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Supplementary problems--1 |
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20 | (1) |
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Supplementary problems--2 |
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20 | (1) |
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Suggestions, solutions, and answers |
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21 | (4) |
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9 The generalized Napoleon's theorem (2*) |
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25 | (6) |
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25 | (1) |
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Formulation and proof of the generalized Napoleon's theorem |
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26 | (1) |
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Suggestions, solutions, and answers |
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27 | (4) |
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10 Isogonal conjugation and the Simson line (3*) |
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31 | (8) |
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Suggestions, solutions, and answers |
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33 | (5) |
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38 | (1) |
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39 | (16) |
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1 The simplest properties of a circle (1) |
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39 | (3) |
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Suggestions, solutions, and answers |
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40 | (2) |
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42 | (4) |
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Suggestions, solutions, and answers |
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44 | (2) |
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3 Inscribed and circumscribed circles (2) |
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46 | (1) |
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Suggestions, solutions, and answers |
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47 | (1) |
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47 | (2) |
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49 | (1) |
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6 Ptolemy's and Casey's Theorems (3*) |
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50 | (5) |
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50 | (1) |
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51 | (1) |
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Suggestions, solutions, and answers |
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52 | (3) |
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Chapter 3 Geometric transformations |
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55 | (32) |
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1 Applications of transformations (1) |
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55 | (6) |
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Suggestions, solutions, and answers |
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57 | (4) |
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2 Classification of isometries of the plane (2) |
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61 | (2) |
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63 | (1) |
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3 Classification of isometries of space (3*) |
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63 | (2) |
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65 | (1) |
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4 An application of similarity and homothety (1) |
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65 | (6) |
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Suggestions, solutions, and answers |
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67 | (4) |
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5 Rotational homothety (2) |
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71 | (5) |
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5.A Introductory problems involving cyclists |
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71 | (1) |
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72 | (1) |
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73 | (1) |
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Suggestions, solutions, and answers |
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73 | (3) |
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76 | (1) |
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77 | (1) |
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Suggestions, solutions, and answers |
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78 | (1) |
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8 Parallel projection and affine transformations (2) |
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78 | (3) |
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Suggestions, solutions, and answers |
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80 | (1) |
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9 Central projection and projective transformations (3) |
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81 | (2) |
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83 | (4) |
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86 | (1) |
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Chapter 4 Affine and projective geometry |
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87 | (12) |
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87 | (3) |
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Suggestions, solutions, and answers |
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89 | (1) |
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90 | (3) |
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Suggestions, solutions, and answers |
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92 | (1) |
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93 | (6) |
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Fundamental properties and introductory problems |
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93 | (1) |
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94 | (1) |
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95 | (1) |
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Suggestions, solutions, and answers |
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96 | (2) |
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98 | (1) |
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Chapter 5 Complex numbers and geometry (3) |
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99 | (6) |
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1 Complex numbers and elementary geometry |
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99 | (3) |
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Suggestions, solutions, and answers |
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101 | (1) |
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2 Complex numbers and Mobius transformations |
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102 | (3) |
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103 | (1) |
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Suggestions, solutions, and answers |
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103 | (1) |
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104 | (1) |
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Chapter 6 Constructions and loci |
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105 | (20) |
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105 | (6) |
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Suggestions, solutions, and answers |
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106 | (5) |
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2 Construction and loci problems involving area (1) |
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111 | (6) |
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Suggestions, solutions, and answers |
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113 | (4) |
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3 Construction toolbox (2) |
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117 | (3) |
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Suggestions, solutions, and answers |
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119 | (1) |
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4 Auxiliary constructions (2*) |
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120 | (5) |
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Suggestions, solutions, and answers |
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121 | (2) |
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123 | (2) |
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125 | (20) |
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125 | (1) |
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Suggestions, solutions, and answers |
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126 | (1) |
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126 | (4) |
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2.A Projections of figures constructed from cubes |
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126 | (2) |
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128 | (2) |
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130 | (2) |
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3A Inscribed and circumscribed polyhedral |
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130 | (2) |
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Suggestions, solutions, and answers |
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132 | (1) |
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132 | (2) |
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4 Higher-dimensional space (4*) |
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134 | (11) |
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4.A Simplest polyhedra in higher-dimensional space |
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134 | (4) |
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4.B Multi-dimensional volumes |
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138 | (1) |
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4.C Volumes and intersections |
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139 | (1) |
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140 | (1) |
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4.E Partitions into parts of smaller diameter |
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141 | (1) |
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Suggestions, solutions, and answers |
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141 | (2) |
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143 | (2) |
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Chapter 8 Miscellaneous geometry problems |
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145 | (23) |
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1 Geometric optimization problems (2) |
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145 | (6) |
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Suggestions, solutions, and answers |
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147 | (4) |
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151 | (7) |
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Suggestions, solutions, and answers |
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152 | (6) |
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158 | (8) |
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Suggestions, solutions, and answers |
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161 | (5) |
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4 Curvilinear triangles and non-Euclidean geometry (3*) |
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166 | (2) |
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Additional problems |
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168 | (1) |
Suggestions, solutions, and answers |
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169 | (1) |
Additional reading |
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169 | (2) |
Bibliography |
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171 | (4) |
Index |
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175 | |