Dear Giovanni

I suppose Edward means by pole of a pair of circles, a circle of null radius

in the bundle of circles they define.

So two non secant circles have a pair of poles.

I draw the sketch and it works, I don't know why for the moment. I have

still to think about it!

Friendly

Francois

On Sun, Feb 1, 2009 at 9:03 PM, Giovanni Artico <zeroprof@...> wrote:

> In message #1006 by Edward Brisse I read:

>

> "Construct the common pole P to incenter and circumscribed circle to

> ABC"

>

> I don't know what this is and how to construct it. If someone could

> illuminate, many thanks in advance.

>

> Giovanni Artico

>

>

>

[Non-text portions of this message have been removed]