by use of ruler and compass

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• Compass and straightedge constructions — Creating a regular hexagon with a ruler and compass Construction of a regular pentagon Compass and straightedge or ruler and compass construction is the construction of lengths, angl …   Wikipedia

• Ruler — For other uses, see Ruler (disambiguation). A variety of rulers A 2 meter …   Wikipedia

• Greek arithmetic, geometry and harmonics: Thales to Plato — Ian Mueller INTRODUCTION: PROCLUS’ HISTORY OF GEOMETRY In a famous passage in Book VII of the Republic starting at Socrates proposes to inquire about the studies (mathēmata) needed to train the young people who will become leaders of the ideal… …   History of philosophy

• Timeline of Islamic science and engineering — This timeline of Islamic science and engineering covers the general development of science and technology in the Islamic world during the Islamic Golden Age, usually dated from the 7th to 16th centuries.From the 17th century onwards, the advances …   Wikipedia

• Beam compass — A beam compass is a compass with a beam and sliding sockets or cursors for drawing and dividing circles larger than those made by a regular pair of compasses.[1] The instrument can be as a whole, or made on the spot with individual sockets… …   Wikipedia

• Oxy-fuel welding and cutting — Oxyacetylene redirects here. For the song, see Cubanate. Side of metal, cut by oxygen propane cutting torch …   Wikipedia

• Atomic bombings of Hiroshima and Nagasaki — Part of the Pacific War, World War II …   Wikipedia

• History of science and technology in China — Inventions …   Wikipedia

• Regla y compás — Construcción de un hexágono regular con regla y compás …   Wikipedia Español

• Genghis Khan and the Making of the Modern World — (ISBN 0 609 80964 4) is a 2004 book by Jack Weatherford, Dewitt Wallace Professor of Anthropology at Macalester College. It describes the rise and impact of Genghis Khan. The text is based largely on the Secret History of the Mongols and also… …   Wikipedia

• Tap and die — Not to be confused with Tool and die. Taps and dies are cutting tools used to create screw threads, which is called threading. A tap is used to cut the female portion of the mating pair (e.g., a nut). A die is used to cut the male portion of the… …   Wikipedia