**TI82** TxtView file generated by CalcText - Kouri» ¬SPE4¬ªÿ4)Similitudes directe(M'N')/(P'Q')=(MN)/(PQ) Isometries:MN=M'N' rapport:kk' s°t S(M)=N triangle=>triangle semblable Directe =meme angle z'=az+b rapport=|a| arg(a)=(vecAB;vecA'B') poin invariant=centre si k=1 et Teta=0=>translation si S=h°r z'-w=ke^(i*pi*teta)(z-w) OM'=kOM COnservations: alignement parallelisme orthogono contact barycentre droite=droite' segment=segment cercle R=cercle kR ÿýŠ