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Sagot :

LEAJ29

Réponse:

BDA= 180° -(ABD + BAD) = 180°- ( 56° + 67°) = 180°- 123° = 57°

ADC = BDC - ADB =180° - 57° = 123°

DAC = 180°- (22° - 123°) =180° - 145° = 35°

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