Analysis, 41, 161 Angle, 142, 155; trisection of, 31, 215 Anthonisz, Adriaen, 279 Antiphon, 31, 32, 276 Apollodotus (Apollodorus), 259 Apollonius, 34, 214, 231 Applied problems, 75, 103, 178, 186, 192, 195, 203, 204, 209, 215, 217, 242, 267, 295, 317 Appreciation of geometry, 19 Arab geometry, 37, 51 Archimedes, 34, 42, 48, 139, 141, 215, 276, 278, 314, 327, 328 Aristaeus, 310 Aristotle, 33, 42, 134, 135, 137, 145, 154, 177, 209 Aryabhatta, 36, 279 Associations, syllabi of, 58, 60, 64 Assumptions, 116 Astrolabe, 172 Athelhard of Bath, 37, 51 Athenaeus, 259 Axioms, 31, 41, 116 Babylon, 26, 272 Bartoli, 10, 44, 238 Belli, 10, 44, 172 Beltinus, 239, 241 Beltrami, 127 Bennett, J., 224 Bernoulli, 280 Bertrand, 62 Betz, 131 Bezout, 62 Bhaskara, 232, 268 Billings, R. W., 222 Billingsley, 52 Bion, 192, 239 Boethius, 43, 50 Bolyai, 128 Bonola, 128 Books of geometry, 165, 167, 201, 227, 252, 269, 289, 303, 321 Bordas-Demoulin, 24 Borel, 11, 67, 196 Bosanquet, 272 Bossut, 23 Bourdon, 62 Bourlet, 67, 165, 196 Brahmagupta, 36, 268, 279 Bretschneider, C. A., 30 Brouncker, 280 Bruce, W. N., 199 Bryson, 31, 32, 276 Cajori, 46 Calandri, 30 Campanus, 37, 51, 135 Cantor, M., 29, 46 Capella, 50, 135 Capra, 44 Carson, G. W. L., 18, 96, 114 Casey, J., 38 Cassiodorius, 50 Cataneo, 10, 44 Cavalieri, 136, 329 Chinese values of [pi], 279 Church schools, 43 Cicero, 34, 50, 259, 314 Circle, 145, 201, 270, 287; squaring the, 31, 32, 277 Circumference, 145 Cissoid, 34 Class in geometry, 108 Clavius, 121 Colleges, geometry in the, 46 Collet, 24 Commensurable magnitudes, 206, 207 Conchoid, 34 Condorcet, 23 Cone, 315 Congruent, 151 Conic sections, 33, 315 Continuity, 212 Converse proposition, 175, 190, 191 Crelle, 142 Cube, duplicating the, 32, 307 Cylinder, 313 D'Alembert, 24, 67 Dase, 279 Decagon, 273 Definitions, 41, 132 De Judaeis, 239, 241 De Morgan, A., 58 De Paolis, 67 Descartes, 38, 84, 320 Diameter, 146 Dihedral, 298 Diocles, 34 Diogenes Laertius, 259 Diorismus, 41 Direction, 150 Distance, 154 Doyle, Conan, 8 Drawing, 95, 221, 281 Duality, 173 Duhamel, 164 Dupin, 11, 217 Duplication problem, 32, 307 Duerer, 10 Educational problems, 1 Egypt, 26, 40 Eisenlohr, 27 Engel and Staeckel, 128 England, 14, 46, 58, 60 Epicureans, 188 Equal, 151, 153 Equilateral, 147 Equivalent, 151 Eratosthenes, 48