The first rule of firearm safety is "watch that muzzle! " what does this mean

It means watch where you point it, you should always point straight down with a firearm and never point it at anyone.

Hope this helps and have a great day

The linear perspective changed the quality of art because it gave art a sense of reality. it gave the illusion that the background and surroundings were actually close and/or far and a sense of depth. linear perspective change the quality of art following its birth the renaissance period as they want the art to be more realistic and they believe one way to achieve it is to use the method of linear perspective. it uses the principle of math to realistically portray space and depth in art. 

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