Sir i have been taking your lesson on triads. I have a doubt as in the the lesson it is written that teiad is derive for the root note and the 3rd and 5th note but un some cases i have seen that it is not the case eg the first triad for c major is showing the notes of G#CE whereas it should be G, Cand E
Please identify the lesson by its number, and tell us the time stamp at which the lesson is "showing the notes" that are the source of your difficulty.