Trigonometry

Category:Geometria (Ardüser) – Wikimedia Commons

https://commons.wikimedia.org/wiki/Category:Geometria_(Ard%C3%BCser)?uselang=de

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Deutsche Biographie - Haßler, Ferdinand Rudolph

https://www.deutsche-biographie.de/gnd117503444.html#ndbcontent

Deutsche Biographie

The Crest of the Peacock: Non-European Roots of Mathematics (Third Edition) - George Gheverghese Joseph - Google Books

https://books.google.de/books?id=c-xT0KNJp0cC&pg=PA492

From the Ishango Bone of central Africa and the Inca quipu of South America to the dawn of modern mathematics, The Crest of the Peacock makes it clear that human beings everywhere have been capable of advanced and innovative mathematical thinking. George…

The Crest of the Peacock: Non-European Roots of Mathematics - Third Edition - George Gheverghese Joseph - Google Books

https://books.google.de/books?id=ymud91nTc9YC&pg=PA247#v=onepage

From the Ishango Bone of central Africa and the Inca quipu of South America to the dawn of modern mathematics, The Crest of the Peacock makes it clear that human beings everywhere have been capable of advanced and innovative mathematical thinking. George…

Edv-Raum.de - Ihr Edv Raum Shop

http://www.edv-raum.de

Foundation Mathematics for Computer Science, Weißer Schreibtisch aus Kiefer Massivholz 180 cm breit, Eckschreibtisch in Eiche Sonoma Regal, Bilgi Teknolojileri Kullaniminin Saglik Çalisani Memnuniyetine Etkisi, Interest Based Collaborative Filtering…

The Trisectors - Underwood Dudley - Google Books

https://books.google.de/books?id=tp3kHvbMjqUC&pg=PA15

As a companion to Mathematical Cranks, the MAA is happy to offer its readers another Dudley classic, The Trisectors. This book is also about mathematical cranks - angle trisectors. It is impossible to trisect angles with straight-edge and compass alone,…

The Trisectors - Underwood Dudley - Google Books

https://books.google.de/books?id=tp3kHvbMjqUC&pg=PA6#v=onepage

As a companion to Mathematical Cranks, the MAA is happy to offer its readers another Dudley classic, The Trisectors. This book is also about mathematical cranks - angle trisectors. It is impossible to trisect angles with straight-edge and compass alone,…