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10 questions from this quiz
Averaging the coordinates
(x1+x22,y1+y22)\left(\frac{x_1+x_2}{2}, \frac{y_1+y_2}{2}\right)(2x1+x2,2y1+y2)
The xxx-coordinate
(1,2)(1, 2)(1,2)
(−12,1)\left(-\frac{1}{2}, 1\right)(−21,1)
Pythagoras' theorem
(x2−x1)2+(y2−y1)2\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}(x2−x1)2+(y2−y1)2
65\sqrt{65}65
A point (ordered pair)
777
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