calcule o perimetro do triangulo ABC ,sendo A(1,0),B(3,7) C(-2,4)
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Para isso devemos descobrir as distancias entre os pontos
![D_{AB}= \sqrt{( x_{1}- x_{2} ) ^{2} + (y_{1}- y_{2} ) ^{2} } D_{AB}= \sqrt{( x_{1}- x_{2} ) ^{2} + (y_{1}- y_{2} ) ^{2} }](https://tex.z-dn.net/?f=+D_%7BAB%7D%3D+%5Csqrt%7B%28+x_%7B1%7D-+x_%7B2%7D+%29+%5E%7B2%7D+%2B+%28y_%7B1%7D-+y_%7B2%7D+%29+%5E%7B2%7D+%7D)
![D_{AB}= \sqrt{(1 - 3) ^{2} + (0-7) ^{2} } D_{AB}= \sqrt{(1 - 3) ^{2} + (0-7) ^{2} }](https://tex.z-dn.net/?f=+D_%7BAB%7D%3D+%5Csqrt%7B%281+-+3%29+%5E%7B2%7D+%2B+%280-7%29+%5E%7B2%7D+%7D)
![D_{AB}= \sqrt{(-2) ^{2} + (-7) ^{2} } D_{AB}= \sqrt{(-2) ^{2} + (-7) ^{2} }](https://tex.z-dn.net/?f=+D_%7BAB%7D%3D+%5Csqrt%7B%28-2%29+%5E%7B2%7D+%2B+%28-7%29+%5E%7B2%7D+%7D)
![D_{AB}= \sqrt{4 +14} D_{AB}= \sqrt{4 +14}](https://tex.z-dn.net/?f=+D_%7BAB%7D%3D+%5Csqrt%7B4+%2B14%7D)
![D_{AB}= \sqrt{18} D_{AB}= \sqrt{18}](https://tex.z-dn.net/?f=+D_%7BAB%7D%3D+%5Csqrt%7B18%7D)
![D_{AC}= \sqrt{( x_{1}- x_{1} ) ^{2} + (y_{1}- y_{2} ) ^{2} } D_{AC}= \sqrt{( x_{1}- x_{1} ) ^{2} + (y_{1}- y_{2} ) ^{2} }](https://tex.z-dn.net/?f=+D_%7BAC%7D%3D+%5Csqrt%7B%28+x_%7B1%7D-+x_%7B1%7D+%29+%5E%7B2%7D+%2B+%28y_%7B1%7D-+y_%7B2%7D+%29+%5E%7B2%7D+%7D)
![D_{AC}= \sqrt{(1 - (-2)) ^{2} + (0-4) ^{2} } D_{AC}= \sqrt{(1 - (-2)) ^{2} + (0-4) ^{2} }](https://tex.z-dn.net/?f=+D_%7BAC%7D%3D+%5Csqrt%7B%281%C2%A0-+%28-2%29%29+%5E%7B2%7D+%2B+%280-4%29+%5E%7B2%7D+%7D)
![D_{AC}= \sqrt{(3) ^{2} + (-4) ^{2} } D_{AC}= \sqrt{(3) ^{2} + (-4) ^{2} }](https://tex.z-dn.net/?f=+D_%7BAC%7D%3D+%5Csqrt%7B%283%29+%5E%7B2%7D+%2B+%28-4%29+%5E%7B2%7D+%7D)
![D_{AC}= \sqrt{9 +16} D_{AC}= \sqrt{9 +16}](https://tex.z-dn.net/?f=+D_%7BAC%7D%3D+%5Csqrt%7B9+%2B16%7D)
![D_{AC}= \sqrt{27} D_{AC}= \sqrt{27}](https://tex.z-dn.net/?f=+D_%7BAC%7D%3D+%5Csqrt%7B27%7D)
![D_{CB}= \sqrt{( x_{1}- x_{2} ) ^{2} + (y_{1}- y_{2} ) ^{2} } D_{CB}= \sqrt{( x_{1}- x_{2} ) ^{2} + (y_{1}- y_{2} ) ^{2} }](https://tex.z-dn.net/?f=+D_%7BCB%7D%3D+%5Csqrt%7B%28+x_%7B1%7D-+x_%7B2%7D+%29+%5E%7B2%7D+%2B+%28y_%7B1%7D-+y_%7B2%7D+%29+%5E%7B2%7D+%7D)
![D_{CB}= \sqrt{((-2) - 3) ^{2} + (4-7) ^{2} } D_{CB}= \sqrt{((-2) - 3) ^{2} + (4-7) ^{2} }](https://tex.z-dn.net/?f=+D_%7BCB%7D%3D+%5Csqrt%7B%28%28-2%29%C2%A0-+3%29+%5E%7B2%7D+%2B+%284-7%29+%5E%7B2%7D+%7D)
![D_{CB}= \sqrt{(-5) ^{2} + (-3) ^{2} } D_{CB}= \sqrt{(-5) ^{2} + (-3) ^{2} }](https://tex.z-dn.net/?f=+D_%7BCB%7D%3D+%5Csqrt%7B%28-5%29+%5E%7B2%7D+%2B+%28-3%29+%5E%7B2%7D+%7D)
![D_{CB}= \sqrt{25 +9} D_{CB}= \sqrt{25 +9}](https://tex.z-dn.net/?f=+D_%7BCB%7D%3D+%5Csqrt%7B25+%2B9%7D)
![D_{CB}= \sqrt{34} D_{CB}= \sqrt{34}](https://tex.z-dn.net/?f=+D_%7BCB%7D%3D+%5Csqrt%7B34%7D)
P=
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+![D_{AC} D_{AC}](https://tex.z-dn.net/?f=+D_%7BAC%7D%C2%A0)
P=
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+![\sqrt{27} \sqrt{27}](https://tex.z-dn.net/?f=%5Csqrt%7B27%7D)
Como não tem como somar essas raízes paramos aqui
Espero ter ajudado
P=
P=
Como não tem como somar essas raízes paramos aqui
Espero ter ajudado
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