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DE=![sqrt{(1+2)^2+(-3-4)^2} = sqrt{9+49} = sqrt{58} sqrt{(1+2)^2+(-3-4)^2} = sqrt{9+49} = sqrt{58}](https://tex.z-dn.net/?f=+sqrt%7B%281%2B2%29%5E2%2B%28-3-4%29%5E2%7D+%3D+sqrt%7B9%2B49%7D+%3D+sqrt%7B58%7D+)
EF=![sqrt{(5-1)^2+(3+3)^2} = sqrt{16+36} = sqrt{52} =2 sqrt{13} sqrt{(5-1)^2+(3+3)^2} = sqrt{16+36} = sqrt{52} =2 sqrt{13}](https://tex.z-dn.net/?f=+sqrt%7B%285-1%29%5E2%2B%283%2B3%29%5E2%7D+%3D+sqrt%7B16%2B36%7D+%3D+sqrt%7B52%7D+%3D2+sqrt%7B13%7D+)
DF=![sqrt{(5+2)^2+(3-4)^2} = sqrt{49+1}= sqrt{50} =5 sqrt{2} sqrt{(5+2)^2+(3-4)^2} = sqrt{49+1}= sqrt{50} =5 sqrt{2}](https://tex.z-dn.net/?f=+sqrt%7B%285%2B2%29%5E2%2B%283-4%29%5E2%7D+%3D+sqrt%7B49%2B1%7D%3D++sqrt%7B50%7D+%3D5+sqrt%7B2%7D+)
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