The Math Forum

Search All of the Math Forum:

Views expressed in these public forums are not endorsed by NCTM or The Math Forum.

Math Forum » Discussions » Math Topics » geometry.puzzles

Topic: Circle Connections
Replies: 4   Last Post: Sep 12, 2012 9:18 AM

Advanced Search

Back to Topic List Back to Topic List Jump to Tree View Jump to Tree View   Messages: [ Previous | Next ]
Avni Pllana

Posts: 546
Registered: 12/6/04
Re: Mathematical Revolution
Posted: Aug 27, 2012 11:29 AM
  Click to see the message monospaced in plain text Plain Text   Click to reply to this topic Reply

> Hi, May I have your attention to the following
> website:
> Your feedback is appreciated
> Regards

Hi Hassan,

your main statement in the section "Trisection" is:

"The proportions of the adjacent angles are constantly retained through shifting the vertex along the axis of symmetry."

But this statement in general is not true. For example let the desired point D be the intersection of segments SR and PK. Then angle(RDP) = 90°, and according to your main statement angle(RDG) should be 3*angle(RDP), or 270°, and this is obviously not true.

As for section "pi = 3.1547..." see Kochanski's Approximation:

Best regards,

Point your RSS reader here for a feed of the latest messages in this topic.

[Privacy Policy] [Terms of Use]

© The Math Forum at NCTM 1994-2017. All Rights Reserved.