Midpoint of segment from $(x_1, y_1, z_1)$ to $(x_2, y_2, z_2)$ is:
A$(x_1 x_2, y_1 y_2, z_1 z_2)$
B$\left(\frac{x_1-x_2}{2}, \frac{y_1-y_2}{2}, \frac{z_1-z_2}{2}\right)$
C$\left(\frac{x_1+x_2}{2}, \frac{y_1+y_2}{2}, \frac{z_1+z_2}{2}\right)$
D$(x_1 + x_2, y_1 + y_2, z_1 + z_2)$
Answer & Solution
Correct answer: C. $\left(\frac{x_1+x_2}{2}, \frac{y_1+y_2}{2}, \frac{z_1+z_2}{2}\right)$
Midpoint = average of each coordinate.
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