Question

What is the midpoint between `P(3,−2,−3)` and `Q(7,0,1)`?

Answer 1

You calculate the midpoints on all three co-ordinates, by taking the mean of those co-ordinates:

`x_M=(x_P+x_Q)/2=(3+7)/2=5`

`y_M=(y_P+y_Q)/2=(-2+0)/2=-1`

`z_M=(z_P+z_Q)/2=(-3+1)/2=-1`

Answer : `M(5,-1,-1)`