Sagot :
Bonsoir,
BDA = 180 - 67 - 56 => 57°
ADC = 180 - 57 =>123°
DAC = 180 - 22 - 123 =>35°
angle plat = 180°
somme des angles d'un triangle = 180°
Bonsoir,
BDA = 180 - 67 - 56 => 57°
ADC = 180 - 57 =>123°
DAC = 180 - 22 - 123 =>35°
angle plat = 180°
somme des angles d'un triangle = 180°