At 2:15, the instructor says “this plane tessalits the whole plane”. I am not able understand what is meant by tessalits. Tessalits is the word written in the transcription.
I haven’t taken that course (yet), but one guess would be that he is saying “tessellate”, but the voice recognition system didn’t “grok” that. 
Yup! That’s what he is saying. Understood now. Thanks Paul!!