(688,#3) a) Draw a rectangular box that has P(1,1,2) and Q(3,4,5)
as opposite vertices and has its faces parallel to the coordinate planes;
b)Find the coordinates of the other six vertices of the box;
c) Find the length of the diagonal of the box;
Solution:
a)
b)
c) Distance formula in three dimensions for the distance
between
the points
is:
Therefore the length of the diagonal
is the distance between
the points P(1,1,2) and Q(3,4,5) :