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Unless the head on that actually lay over on its side to cut at an angle other than the blade being straight up and down, it is NOT a compound miter saw.. Just a basic miter saw.. You got a good deal.
I gave my 10 inch miter saw to my brother, like you have but it was a Ryobi..
I replaced it with a 12 inch sliding compound miter saw with LED light for the cut line and it will make a 18 inch cut at 90 degrees.. Sweet.. Its a Ryobi I got a steal sale price.. It has a couple features the DeWalt did not have so I bought it.. Great saw... This sliding cut off will mean I do not have to get my contractor Bosch Table saw out for cuttng things on as much.
Sorry for the confusion.....