regles1.py

Created by hugo37140

Created on November 21, 2021

650 Bytes

AB = DC
si et seulement si 
ABCD est un parallélogramme.

Relation de Chasles :
Soient trois points distincts A, B et C.
AB+BC=AC

Règle du parallélogramme :
Soient trois points distincts 
A, B et C. 
AB+AC=AM 
si et seulement si ABMC est 
un parallélogramme.

Définition :
Deux vecteurs u et v sont 
colinéaires signifie qu’il existe un unique réel λ non nul tel que
u=λv
Le vecteur nul est colinéaire 
à tous les vecteurs.

Trois points A, B et C sont alignés si et seulement si
les vecteurs AB et AC sont colinéaires.

Deux droites (AB) et (AC) sont parallèles si et
seulement si les vecteurs AB et AC
sont colinéaires.

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