NavList:

   

Reply

Hello Andrew,

Did you literally just read to the end of page 38 or did you follow the
argument at least to fig. 4 in the middle of p. 39? There you have the
construction of the symmedian plain and simple.

Here is a link to a picture of the triangle that I use.

http://www.schulfabrik.de/shop-445-aristo-geo-dreieck.html

With the scale measure the length of a the side of the cocked hat and
with the parallel grid draw a parallel to the LOP through that side at
the measured distance. Then repeat procedure for at least one more side.
Better yet, use the symmetrical scale to immediately read off the length
of half the sides and use those distances in order to keep the plot at a
manageable size.

Herbert Prinz

On 2010-12-24 05:54, Andrew Nikitin wrote:
>
> Gary Lapook wrote:
>
> "Herbert, I reread Villarceau and your graphical method of determining
> the Symmedian point was not obvious to me. Could you give us more
> detail of your method using a 90-45-45 triangle?"
>
> I too reread page 38 of Villarceau book as well as Herbert's post.
> I too do not see where Herbert's graphical method is described in a
> way I can understand. Or how 90-45-45 triangle is related to page 38
> of Villarceau book.
> I too would like to learn more of this method.
>
>
> ----------------------------------------------------------------
> NavList message boards and member settings: www.fer3.com/NavList
> Members may optionally receive posts by email.
> To cancel email delivery, send a message to NoMail[at]fer3.com
> ----------------------------------------------------------------
>

   

Reply