On a man's suit jacket, where is a notch, shawl, or peak located?

Depends on where you are from. In Britain, and probably a good portion of the kingdom, the lapel is considered part of the collar, while in the US, they are considered separate. So both ways are right.

Dang I thought collar and lapel were the same thing

The jacket in the picture on the left has a shawl lapel and it is not a tuxedo.

I was very sure this was Collar. Never mind, can't be a smarty-pants all of the time, lol.

yep I don't like to be wrong but it's a shawl collar not a shawl lapel.

Agree Depending on country, lapel and collar same thing and only one answer is 'right' here Question needs wording

the lapel is part of the collar