There are tables and figures in a document, uniquely identifiable by their numbers. 

We want to refer to them in several places. Which one is preferable in academic English writing and why?

> * In figure 1 ...  
In the figure 1 ...

> * With the help of table 1 ...  
With the help of the table 1 ...

> * Lemma 1 helps ...  
The lemma 1 helps ...