It gets even worse because there are no relative clauses! I guess you could refer to the entire dag as a "sitelen" (here 'image, picture') and then say "mi mute li lukin e sitelen ni. ona li jo e ijo mute e linja mute..." and then refer to the dag as "sitelen" on every subsequent reference.

I'm definitely not going to defend toki pona's convenience or utility for talking about math. :-)