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Mathematics, 17.11.2020 16:20 tmark45

21 Zigzag AR B C S D E T F Sur la figure ci- dessus : les droites (AB)(CD) et (EF) sont parallèles ; R est un point de la droite (AB), S est un point de la droite (CD) et T est un point de la droite (EF) tels que : overline BRS =20^ et overline RST =57^ Calcule la mesure de l'angle STF Explique bien TOUTE ta démarche (raisonnement et calcul pour arriver à la mesure de l'angle STF) Dronreté lisibilité travail. point


21 Zigzag AR B C S D E T F Sur la figure ci- dessus : les droites (AB)(CD) et (EF) sont parallèles

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