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www.mathplanet.com | ||
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robertlovespi.net
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| | | | | The obtuse triangles here are golden gnomons, which are isosceles triangles with vertex angles of 108 degrees, as well as base-to-leg ratios which are golden. These triangles are facelets; the actual, much larger faces are the regular pentagons of which the golden gnomons are parts. In this model, all facelets which are part of the... | |
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corbettmaths.com
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| | | | | The Ultimate GCSE Foundation Maths Revision Video and Booklet - Edexcel AQA OCR - Corbettmaths | |
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www.johndcook.com
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| | | | | How the Pythagorean theorem, law of sines, and law of cosines translate to hyperbolic geometry. | |
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thisandthatthenextpart.wordpress.com
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| | | Visit the post for more. | ||