I have a stupid question about the use of the word "Figure".
Do we say "In Figure below" or "In the Figure below".
The question in the title and the question in the body are different, so let's answer both.
In the figure below
is correct. Omitting the article would be ungrammatical. Technically if there was more than one figure below you could say "in a figure below".
However if you are already specifying which figure you mean you do not need an article.
In Figure 1
is correct and needs no article. In the Figure 1 would be wrong.
Adding 'below' parenthetically does not change that.
In Figure 1 (below)
is also correct.
In English texts it is usual to say "In the figure below". Read almost any text book or instruction manual to find examples. This question has been asked before.