"정다각형"의 두 판 사이의 차이

2010년 12월 23일 (목) 11:36 판

@@ 14번째 줄: / 14번째 줄: @@
 <h5>정다각형의 대각선의 길이</h5>
+* [[정다각형의 대각선의 길이]]
-<math>\sin \frac{h\pi}{n}\sin \frac{k\pi}{n}=\sum_{j=0}^{k-1}\sin \frac{(h-k+2j+1)\pi}{n}\sin \frac{\pi}{n}</math>
@@ 46번째 줄: / 46번째 줄: @@
 <h5>메모</h5>
-* A. Fontaine and S. Hurley, [http://forumgeom.fau.edu/FG2006volume6/FG200610.pdf Proof by picture: Products and reciprocals of diagonal length ratios in the regular polygon], Forum Geom., 6 (2006) 97–101.
-* [http://forumgeom.fau.edu/FG2006volume6/FG200630.pdf Formulas among diagonals in the regular polygon and the Catalan numbers]
-* [http://www.math.rutgers.edu/%7Eerowland/polygons.html http://www.math.rutgers.edu/~erowland/polygons.html]
-* http://twistedone151.wordpress.com/2010/10/25/monday-math-140/
-* http://twistedone151.wordpress.com/2010/11/01/monday-math-141/