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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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