Contents: (I) The Place of Practical Geometry in the Middle Ages: The Nature of Practical Geometry, Practical Geometry in Education, Theory and Practice in Geometry, and Practical Geometry and Practical Concerns, (II) The Contents of "Artis cuiuslibet consummatio" and the "Pratike de geometrie", (III) Procedures in the Editions, Translations, and Commentary: Editing "Artis cuiuslibet consummatio", Editing the "Pratike de geometrie", Translating the Texts, and About the commentary, and (IV) English translation of "Arts cuiuslibet consummatio" and of the "Pratike de geometrie." Selected Bibliography, Index of Latin Technical Terms, Index of Old French Technical Terms, and Index of Astronomical Parameters. Illus.