Addition axiom
Here, we want to select the correct option
For the relation;
[tex]AB\text{ + BC = BC + CD}[/tex]
Now, we want to select the option that would make us conclude that AB and CD has same length
The correct answer here is that of the addition axiom
It allows us know that for the two quantities to be equal, then since they are added to the same value, then the two must be of the same value to preserve the equality
