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Sagot :

GGDU19

Bonjour,

On a A(-2;-5) B(5;-3) C(2;1)

AB=√((5-(-2))²+(-3-(-5))²)

    =√(7²+2²)

    =√(49+4)

    =√53

BC=√((2-5)²+(1-(-3))²)

     =√((-3)²+4²)

     =√(9+16)

     =√25

     =5

AC=√((2-(-2))²+(1-(-5))²)

    =√(4²+6²)

    =√(16+36)

    =√52

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