(25) Calculs Planimetriques en Coordonnees

[Thomas Okken]

With my high school French, I was able to figure most of it out (from the 1-14.pdf), though without the illustrations I would have been lost. I'm not familiar with French mathematical jargon, but guessed that "droite" is similar to the use of "Gerade" (noun) in German, meaning "straight line."

I can't for the life of me figure out what "gisement" is supposed to mean in this context, though. (Program 4, center of page.) The definitions I find in Wiktionary and elsewhere on-line don't seem to apply.

And I'd never seen the notation

Code:

1 | x
  | y

before. Again from context, it looks like it means "point 1."