Roshdi Rashed is one of the most eminent authorities on Arabic mathematics and the exact sciences. A historian and philosopher of mathematics and science and a highly celebrated epistemologist, he is currently Emeritus Research Director (distinguished class) at the Centre National de la Recherche Scientifique (CNRS) in Paris, and is the Director of the Centre for History of Medieval Science and Philosophy at the University of Paris (Denis Diderot, Paris VII). He also holds an Honorary Professorship at the University of Tokyo and an Emeritus Professorship at the University of Mansourah in Egypt.J. V. Field, is a historian of science, and is a Visiting Research Fellow in the Department of History of Art and Screen Media, Birkbeck, University of London, UK.

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• Introduction: Conic sections and geometrical constructions Chapter 1: Theory of conics and geometrical constructions: 'completion of the conics' Chapter 2:Correcting the Bana Masa's Lemma for Apollonius' conics Chapter 3: Problems of geometrical construction Chapter 4: Practical Geometry: Measurement Appendix 1: A Research Tradition: the regular heptagon Appendix 2: Sinan ibn Al-Fati and Al-Qabisi:Optical Mensuration Supplementary notes Bibliography Indexes

Roshdi Rashed is one of the most eminent authorities on Arabic mathematics and the exact sciences. A historian and philosopher of mathematics and science and a highly celebrated epistemologist, he is currently Emeritus Research Director (distinguished class) at the Centre National de la Recherche Scientifique (CNRS) in Paris, and is the Director of the Centre for History of Medieval Science and Philosophy at the University of Paris (Denis Diderot, Paris VII). He also holds an Honorary Professorship at the University of Tokyo and an Emeritus Professorship at the University of Mansourah in Egypt.J. V. Field, is a historian of science, and is a Visiting Research Fellow in the Department of History of Art and Screen Media, Birkbeck, University of London, UK.

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• Introduction: Conic sections and geometrical constructions Chapter 1: Theory of conics and geometrical constructions: 'completion of the conics' Chapter 2:Correcting the Bana Masa's Lemma for Apollonius' conics Chapter 3: Problems of geometrical construction Chapter 4: Practical Geometry: Measurement Appendix 1: A Research Tradition: the regular heptagon Appendix 2: Sinan ibn Al-Fati and Al-Qabisi:Optical Mensuration Supplementary notes Bibliography Indexes