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ghadaajaber
@ghadaajaber
December 2020
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Bonjour si quelqu'un peut m'aider. Merci d'avance
Soit ABC un triangle ABC rectangle en A tel que AB = 5 cm et ABCˆ =50 ° .
a) Calculer la mesure de l’angle BCAˆ .
Soit D le symétrique de B par rapport à la droite (AC).
b) Déduire que CB = CD.
c) Quelle est alors la nature du triangle CBD ?
d) Que représente (AC) pour le segment [BD] ? justifier la réponse.
Merci
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