Question

Points A,B,C are collinear points where B is between A and C. if AC = 22, AB =10. find BC

Answer 1

ANSWER

$BC=12$

EXPLANATION

First, let us make a sketch of the three points:

As we can see, AC is made up of AB and BC.

This means that the length of AC is the sum of the lengths of AB and BC.

That is:

$\begin{gathered} AC=AB+BC \\ \Rightarrow BC=AC-AB \\ BC=22-10 \\ BC=12 \end{gathered}$

The value of BC is 12.