Naming monodentate ligand complexes

[crays]

Hi guys, i know how to name monodentate ligand complexes but there is a particular one that my textbook and teacher's notes is quite the opposite, its regarding the fac and mer isomer.

for a Ma₃b₃ structure,

a fac forms a face and a mer have the ligands in meridian position, but for these two, which are the cis and which are the fac? My textbook says, fac is equivalent to cis but my teacher's notes says the opposite, help please?

 

[chemisttree]

Nobody's perfect.