How... Can you show me on one problem? (3,-6); (8,6)
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$\displaystyle (x_{1},y_{1}) (x_{2},y_{2})$ $\displaystyle d=\sqrt{(x_{2}-x_{1})^{2}+(y_{2}-y_{1})^{2}}$
Hello, Originally Posted by jscalalamoboy How... Can you show me on one problem? (3,-6); (8,6) Let $\displaystyle M(x_M~,~y_M)$ and $\displaystyle N(x_N~,~y_N)$ $\displaystyle MN$ is defined as following : $\displaystyle MN=\sqrt{(x_N-x_M)^2+(y_N-y_M)^2}$ Take a look at the attachment, and think "Pythagorean theorem" !
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