Çичкĕтеслĕх

Çичкĕтеслĕх, е гептагон — çичĕ енлĕ тата çичĕ кĕтеслĕ нумайкĕтеслĕх.

Çичкĕтеслĕхсем

Вуламалли

• Гептагон // Большой словарь иностранных слов.- Издательство «ИДДК», 2007.
• Horton, J. D. (1983), Sets with no empty convex 7-gons, Canadian Mathematical Bulletin Т. 26 (4): 482–484

Каçăсем

• Definition and properties of a heptagon With interactive animation
• Heptagon according Johnson
• Another approximate construction method
• Polygons – Heptagons
• Recently discovered and highly accurate approximation for the construction of a regular heptagon.
• Heptagon, an approximating construction as an animation
• A heptagon with a given side, an approximating construction as an animation