besoin d'aide merci. Soit les points; A(+8); B(-2); C(-7); D(+12); Calculer les distances AB, AC,AD, BC, BD et CD . merci

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Grade: Education Subject: mathematiques
besoin d'aide merci. Soit les points; A(+8); B(-2); C(-7); D(+12); Calculer les distances AB, AC,AD, BC, BD et CD . merci
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AB=(+8) - (-2)= (+8) + (+2)= +10 AC =(+8)-(-7)=(+8)+(+7)=+15 AD=(+12)-(+8)=(+12)+(-8)=4 BC=(-2)-(-7)=(-2)+(+7)=+5 BD=(+12)-(-2)=(+12)+(+2)=14 CD=(+12)-(-7)=(+12)+(+7)=19