Among the topics covered are: Analytic geometry, Beltrami-Klein model, Cantor set, Ellipse, Geographical Information Systems (GIS), Hyperbolic cosine, Kepler-Poinsot solids, Mystic hexagram theorum, Obtuse Angle, Pascal's Triangle, Quadratic surface. Biographies include: Fillipo Brunelleschi (1377-1446), Shiing-Shen Chern (1911-present), Rene Descartes (1596-1650), M. C. Escher (1898-1970), Fibonacci (1180-1240), Hippocrates of Chios (ca. 460-380 BCE), Emmy Noether (1882-1935), Blaise Pascal (1623-1662), Marjorie Senechal (1939-present), Zu Chongzhi (ca. 429-500). Tables, charts, and diagrams include: Antiprism, Conic sections, Curvalinear figures and solids, Fano Configuration, Golden spiral, Greek alphabet, Polygons, Tangent, Trigonometric functions, Trigonometic tables.