The Secrets of Triangles - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook The Secrets of Triangles write by Alfred S. Posamentier. This book was released on 2012-08-28. The Secrets of Triangles available in PDF, EPUB and Kindle. Requiring no more than a knowledge of high school mathematics and written in clear and accessible language, this book will give all readers a new insight into some of the most enjoyable and fascinating aspects of geometry. Everyone knows what a triangle is, yet very few people appreciate that the common three-sided figure holds many intriguing "secrets." For example, if a circle is inscribed in any random triangle and then three lines are drawn from the three points of tangency to the opposite vertices of the triangle, these lines will always meet at a common point-no matter what the shape of the triangle. This and many more interesting geometrical properties are revealed in this entertaining and illuminating book about geometry. Flying in the face of the common impression that mathematics is usually dry and intimidating, this book proves that this sometimes-daunting, abstract discipline can be both fun and intellectually stimulating. The authors, two veteran math educators, explore the multitude of surprising relationships connected with triangles and show some clever approaches to constructing triangles using a straightedge and a compass. Readers will learn how they can improve their problem-solving skills by performing these triangle constructions. The lines, points, and circles related to triangles harbor countless surprising relationships that are presented here in a very engaging fashion.
The Book of Mysteries
The Book of Mysteries - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook The Book of Mysteries write by Jonathan Cahn. This book was released on 2016-09-06. The Book of Mysteries available in PDF, EPUB and Kindle. New York Times Best Seller! 1500 5-Star Reviews! From the author that brought you NEW YORK TIMES best selling books The Harbinger, The Mystery of the Shemitah, and The Paradigm selling over 3 MILLION copies Imagine if you discovered a treasure chest in which were hidden ancient mysteries, revelations from heaven, secrets of the ages, the answers to man’s most enduring, age-old questions, and the hidden keys that can transform your life to joy, success, and blessing…This is The Book of Mysteries.
Triangle
Triangle - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Triangle write by Katharine Weber. This book was released on 2011-02-22. Triangle available in PDF, EPUB and Kindle. Esther Gottesfeld is the last living survivor of the notorious 1911 Triangle Shirtwaist fire and has told her story countless times in the span of her lifetime. Even so, her death at the age of 106 leaves unanswered many questions about what happened that fateful day. How did she manage to survive the fire when at least 146 workers, most of them women, her sister and fiancé among them, burned or jumped to their deaths from the sweatshop inferno? Are the discrepancies in her various accounts over the years just ordinary human fallacy, or is there a hidden story in Esther's recollections of that terrible day? Esther's granddaughter Rebecca Gottesfeld, with her partner George Botkin, an ingenious composer, seek to unravel the facts of the matter while Ruth Zion, a zealous feminist historian of the fire, bores in on them with her own mole-like agenda. A brilliant, haunting novel about one of the most terrible tragedies in early-twentieth-century America, Triangle forces us to consider how we tell our stories, how we hear them, and how history is forged from unverifiable truths.
Magnificent Mistakes in Mathematics
Magnificent Mistakes in Mathematics - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Magnificent Mistakes in Mathematics write by Alfred S. Posamentier. This book was released on 2013-08-13. Magnificent Mistakes in Mathematics available in PDF, EPUB and Kindle. Two veteran math educators demonstrate how some "magnificent mistakes" had profound consequences for our understanding of mathematics' key concepts. In the nineteenth century, English mathematician William Shanks spent fifteen years calculating the value of pi, setting a record for the number of decimal places. Later, his calculation was reproduced using large wooden numerals to decorate the cupola of a hall in the Palais de la Découverte in Paris. However, in 1946, with the aid of a mechanical desk calculator that ran for seventy hours, it was discovered that there was a mistake in the 528th decimal place. Today, supercomputers have determined the value of pi to trillions of decimal places. This is just one of the amusing and intriguing stories about mistakes in mathematics in this layperson's guide to mathematical principles. In another example, the authors show that when we "prove" that every triangle is isosceles, we are violating a concept not even known to Euclid - that of "betweenness." And if we disregard the time-honored Pythagorean theorem, this is a misuse of the concept of infinity. Even using correct procedures can sometimes lead to absurd - but enlightening - results. Requiring no more than high-school-level math competency, this playful excursion through the nuances of math will give you a better grasp of this fundamental, all-important science.
You Are a Mathematician
You Are a Mathematician - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook You Are a Mathematician write by David Wells. This book was released on 1997-02-18. You Are a Mathematician available in PDF, EPUB and Kindle. Explores the patterns, properties, and problems associated with numbers, looking at topics from basic arithmetic to algebraic equations, and includes over 100 brainteasers and their solutions.
