Midpoint of $(2, 4, 6)$ and $(8, 10, 12)$ is:
A$(5, 7, 9)$
B$(3, 3, 3)$
C$(6, 6, 6)$
D$(10, 14, 18)$
Answer & Solution
Correct answer: A. $(5, 7, 9)$
$\left(\frac{2+8}{2}, \frac{4+10}{2}, \frac{6+12}{2}\right) = (5, 7, 9)$.
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