9893
EXPLORE
LATEST
ABOUT
AUTHORING AREA
PARTICIPATE
Your browser does not support JavaScript or it may be disabled!
Albrecht Dürer's Heptagon of 1525
This Demonstration shows a heptagon constructed in six easy steps using a straight edge and compass.
The heptagon is not regular. For example, one angle at the midpoint is ≈ 51° 19' instead of 360° / 7 ≈ 51° 26'.
Contributed by:
Ralf Schaper
SNAPSHOTS
DETAILS
For more information, see A. Dürer,
Underweysung der Messing mit dem Zirckel und Richtscheyt
(
Treatise on Mensuration with Compass and Ruler
), 1525.
RELATED LINKS
Heptagon
(
Wolfram
MathWorld
)
Geometric Construction
(
Wolfram
MathWorld
)
PERMANENT CITATION
Ralf Schaper
"
Albrecht Dürer's Heptagon of 1525
"
http://demonstrations.wolfram.com/AlbrechtDurersHeptagonOf1525/
Wolfram Demonstrations Project
Published: March 7, 2011
Share:
Embed Interactive Demonstration
New!
Just copy and paste this snippet of JavaScript code into your website or blog to put the live Demonstration on your site.
More details »
Download Demonstration as CDF »
Download Author Code »
(preview »)
Files require
Wolfram
CDF Player
or
Mathematica
.
Related Demonstrations
More by Author
Albrecht Dürer's Nonagon of 1525
Ralf Schaper
Theobald's Heptagon-to-Square Dissection
Izidor Hafner
Theobald's Dissection of a Heptagon to a Triangle
Izidor Hafner
Theobald's Dissection of a Heptagon to a Pentagon
Izidor Hafner
Kürschák's Dodecagon
Sándor Kabai and Ferenc Holló Szabó
Albrecht Dürer's Pentagon of 1525
Ralph Leon
Ratios of the Areas of an Internal Hexagon to Its Star to the External Hexagon
Abraham Gadalla
Tiles with Finite Convex Spectra
Karl Scherer
Japanese Theorem for Cyclic Polygons
David Kang Myung Yang
Irregular Tilings
Karl Scherer
Related Topics
Plane Geometry
Polygons
High School Geometry
High School Mathematics
Browse all topics
Related Curriculum Standards
US Common Core State Standards, Mathematics
HSG-CO.D.12
Note: To run this Demonstration you need Mathematica 7+ or the free Mathematica Player 7EX
Download or upgrade to
Mathematica Player 7EX
I already have
Mathematica Player
or
Mathematica 7+