Sprawdź czy punkty A, B, C są wierzchołkami trójkąta
a) |AB|=3,5 |BC|=4 |AC|=1,5
b,) |AB|=3 |BC|=3 |AC|=1
c) |AB|=1+3√ 2 |BC|=√ 2+ 2 |AC|=2√ 2
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a) i b) Tak co do c) nie jestem pewien