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hujh2012
Posts: 1
Joined: 3/6/2012
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Problem 233 |
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Benjamin Bloch has made some errors in his solution to problem #233.
In his solution to the angles of the plane triangle he will fine that in triangle FAP his sum of the interior angles is 180.02 deg. (180.02 deg = 180d 1m 12s, a big error). In triangle FHP his sum is 180.01 deg. (180.01 deg. = 180d 0m 36s) and in triangle FAG he has the sum as 180.02 deg.
Maybe Bloch just forgot that according to Euclidean geometry the sum of the interior angles of a triangle is equal to 180 degrees exactly. See Euclid's Elements book 1 Proposition 32.
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Tuesday, March 06, 2012 at 11:28:56 PM |