First : sorry for my english, my first langage is french.

2. I can't post this stuff in math forum because I have only yahoo.ca email. I live for few (4) month in North (Kuujjuarapik) and I don't have access to my real email.

3. I read the Dykstra's generalisation of Pythagore theorem in your web site. I work on it and I found sometings funny:

(a^i +- b^i )/c^i = (sin(A)^i +- sin(B)^i)/sin(C)^i

It's a basic application of sin law, but I never see this before. And I think this relation go a little bit far away than Dykstra`s generalisation of Pythagore theorem. I don`t see a lot of application but it's funny.

Thank you

Marc Le Nabec
balaiguimauve@yahoo.ca