Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > geometry.puzzles > #1
| Path | csiph.com!weretis.net!feeder6.news.weretis.net!news.glorb.com!border1.nntp.dca1.giganews.com!border2.nntp.dca1.giganews.com!nntp.giganews.com!news.mathforum.org!not-for-mail |
|---|---|
| From | Michael de Villiers <profmd@mweb.co.za> |
| Newsgroups | geometry.puzzles |
| Subject | Japanese Circumscribed Quadrilateral Theorem and its Generalization |
| Date | Mon, 3 Oct 2016 00:58:51 +0000 (UTC) |
| Organization | The Math Forum |
| Lines | 3 |
| Sender | approve@news.mathforum.org |
| Approved | approve |
| Message-ID | <8667034.55784.1475455663451.JavaMail.root@sodium.mathforum.org> (permalink) |
| NNTP-Posting-Host | news.mathforum.org |
| Mime-Version | 1.0 |
| X-Trace | support1.mathforum.org 1475456331 756 10.0.2.67 (3 Oct 2016 00:58:51 GMT) |
| X-Complaints-To | news@news.mathforum.org |
| NNTP-Posting-Date | Mon, 3 Oct 2016 00:58:51 +0000 (UTC) |
| To | approve@support1.mathforum.org |
| Return-Path | news@mathforum.org |
| Delivery-Date | Sun Oct 2 20:47:48 2016 by support1.mathforum.org (8.11.6/8.11.6/The Math Forum, $Revision: 1.14 primary) id u930lmv32598 for approve; Sun, 2 Oct 2016 20:47:48 -0400 |
| X-NNTP-Posting-Host | sodium.mathforum.org |
| X-Orig-Trace | support1.mathforum.org 1475455663 32452 10.0.2.24 (3 Oct 2016 00:47:43 GMT) |
| X-Orig-Complaints-To | news@news.mathforum.org |
| X-NNTP-Posting-Date | Mon, 3 Oct 2016 00:47:43 +0000 (UTC) |
| Xref | csiph.com geometry.puzzles:1 |
Show key headers only | View raw
This dynamic, interactive sketch at http://dynamicmathematicslearning.com/japanese-circum-quad-theorem.html shows the following beautiful Japanese Temple Geometry result, "The products of the radii of the excircles on each pair of opposite sides of a circumscribed quadrilateral are equal", as well as its generalization to circumscribed 2n-gons. Can you explain why (prove) that the result and its generalization is true? Attachment available from http://mathforum.org/kb/forum.jspa?forumID=129
Back to geometry.puzzles | Next | Find similar
Japanese Circumscribed Quadrilateral Theorem and its Generalization Michael de Villiers <profmd@mweb.co.za> - 2016-10-03 00:58 +0000
csiph-web