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@TheQuinbox This is how we see it in real life and this is how we have to draw it on a piece of paper.
Other parallel lines that are parallel in reality remain parallel on paper: the edge of the room from left to right at the top and from left to right at the bottom are parallel in reality and on paper.
The edge of the room that goes up to down on the left and the one that goes up to down on the right are parallel in reality and on paper.
Only the edges going away from you are affected.