Question 311197
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Use the distance formula to compute the distance from A to B, from B to C, and from  C to A.


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ d\ =\ sqrt{(x_1\ -\ x_2)^2\ +\ (y_1\ -\ y_2)^2}]



where *[tex \Large \left(x_1,y_1\right)] and *[tex \Large \left(x_2,y_2\right)] are the coordinates of the two points.


Square the three distances.  If the two smaller values sum to the third value, the triangle is a right triangle.



John
*[tex \LARGE e^{i\pi} + 1 = 0]
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