Question

найдите длину отрезка MN: M (1/2);N (1/3)

Answer 1

$|MN| = sqrt{(X_{N}- X_M)^2+(Y_N-Y_M)^2}=sqrt{(1- 1)^2+(3-2)^2} = \ =sqrt{0^2+1^2}= sqrt{1}=1$
Ответ: |MN|=1