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Mr. Kerai's Advanced Geometry and Trigonometry Class
Saturday, February 28, 2009
Class on 2/27/09
Read the example problem shown on page 244 and then do problems 4-8 on page 245 of your textbook.
(Note: This work will obviously be done in your notebooks.)
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The School of Athens
Euclid, as imagined by Raphael in this detail from The School of Athens.
Jamshed Al-Kashi
Al-Kashi was one of the greatest mathematicians of the 15th century, calculating the sin(1*) correct to 16 decimal places.
Al-Beruni
The 11th century scientist and philosopher managed to estimate the radius of the earth using a very creative method that employed trigonometry.
Reference Websites
History of Mathematics Archive
Basic Geometry Terms
Mathworld - A Great Mathematical Search Engine
Websites on Pentagon Constructions
The Golden Section - A Property of the Pentagon
Euclid's Construction
Euclid's Construction from Google Books
Alternative Construction and Proof
Proof Relying on the Golden Ratio
Another Consruction Website (Found by Victoria)
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Class on 2/27/09
Class on 2/25/09
Class on 2/24/09
Solution to #12 on Page 234
Homework due 2/17/09
Quiz on Friday, February 20th
Homework due 2/13/09
Homework due 2/11/09
Homework due 2/10/09
Tips for Complex Proofs
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