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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. 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.

The Evil Queen has, quite literally, captured the Huntsman's heart - and now he's her slave. Based on the world of ABC's series 'Once Upon a Time', this is the never-before-tale behind their twisted relationship - and what happens when a good man is forced to do bad. When the comic book was first published in Japan, it was an immediate best-seller, selling over 550,000 copies in less than a year. The stories in the book reflect Japan's national mood during the 'Japanese miracle' and into the 1980s economic bubble: apprehension and optimism jostle one another, and there is a sense of national self-pity. The book also reflects a deep suspicion of politics and bureaucrats. The prime minister appears more worried about his government's popularity than about The Secrets of Triangles: A Mathematical Journey download book taking the right economic course. Ultimately, the employees at Toyosan Motors demonstrate that the success of the Japanese economy will not depend on natural resources or politics but on business practices that are ethical, socially responsible, and forward-looking.

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Author: Alfred S. Posamentier,Ingmar Lehmann
Number of Pages: 300 pages
Published Date: 24 Aug 2012
Publisher: Prometheus Books
Publication Country: Amherst, United States
Language: English
ISBN: 9781616145873
Download Link: Click Here
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