[Fixed #144043981] Show squares is broken for lsrl Because we now show an equation for split plot, we need to adapt the drawSquares algorithm to figure out which cases to use for showSquares.
[Fixed #144043981] Show squares is broken for lsrl
Because we now show an equation for split plot, we need to adapt the drawSquares algorithm to figure out which cases to use for showSquares.

concord-consortium/codap,concord-consortium/codap,concord-consortium/codap,concord-consortium/codap,concord-consortium/codap