Question

X-Y-Z and d(X,Y) = 5, d(X, Z) = 12; then find d(Y,Z).​

Answer 1

It is given that the points X, Y, and Z are collinear.
We have d(X,Y)=17;d(Y,Z)=8.d(X,Y)=17;d(Y,Z)=8.
Now, d(X,Z)=d(X,Y)+d(Y,Z)=17+8d(X,Z)=d(X,Y)+d(Y,Z)=17+8
d(X,Z)=25