What is a name for the angle below?

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I give up. What does the back of the book say?
20

Anonymous
5 years ago
1+1
00

Morewood's avatar
Morewood
Lv 7
1 decade ago
To answer seriously, one must first has to tackle the questions:
What is "2"? and What is "+"?
There is a marvelous little book by Landau (see the sources), usually recommended for advanced math students beginning university, which addresses those questions. It doesn't get as far as actually answering what does 2+2 equal, but sets up the reader to be able to answer such a question properly.
I seem to remember a story about a school with an inscription over the entrance which implies that their graduates should be able to properly answer this question. However I cannot find a reference. Perhaps I should pose that as a question for the Yahoo community ...
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Source(s): Foundations of Analysis By Edmund Landau: http://book

No solution : there is no number of boxes that she bought