Question

d ( X,Z ) = 18 , d ( Y,Z ) = 11 , d ( X, Y ) = 7 . Are the points collinear ?
If yes , state the betweenness

Answer 1

Answer:

Step-by-step explanation:

In two dimensions, one can compare the slopes of segments A B and B C: if they are equal, A B C are collinear. This doesn't work in 3D. Point A and point B ( A ≠ B) determine a line. You can find its equation. See if the coordinates of point C fits the equation. If so, A B and C are colinear, or else, no.