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A069976
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Interior angle of a regular polygon of n sides, rounded to nearest integer.
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5
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60, 90, 108, 120, 129, 135, 140, 144, 147, 150, 152, 154, 156, 158, 159, 160, 161, 162, 163, 164, 164, 165, 166, 166, 167, 167, 168, 168, 168, 169, 169, 169, 170, 170, 170, 171, 171, 171, 171, 171, 172, 172, 172, 172, 172, 173, 173, 173, 173, 173, 173, 173, 173, 174
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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3,1
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REFERENCES
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Alexander Koeberlein, Elementary Geometry for College Students, 2nd Edition, Houghton Mifflin Company, Boston, 1999
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LINKS
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FORMULA
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a(n) = round(((n-2)*180)/n).
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EXAMPLE
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a(5) = (3*180)/5 = 108.
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MATHEMATICA
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PROG
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CROSSREFS
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KEYWORD
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easy,nonn
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AUTHOR
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Kristie Smith (kristie10spud(AT)hotmail.com), Apr 30 2002
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EXTENSIONS
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STATUS
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approved
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