Question

From the information given below, find which of the points is between the other two If the points are not collinear, state so.
$d\left(AB\right)=16,d\left(CA\right)=9,d\left(BC\right)=7$

Answer 1

$d\left(CA\right)\Rightarrow CA=AC=9$ units

$d\left(BC\right)\Rightarrow BC=CB=7$ units

$d\left(AB\right)\Rightarrow AB=BA=16$ units

We have $AB=AC+CB$

$\Rightarrow 16=9+7$

$\therefore$ the point $C$ is in between $A$ and $B$