for the left side's left points:

let's say that, at the top of the screen, the plane will be 1/4 of the total width and centered - so the leftmost point at the top is going to be (60,0).  At the bottom, it will be (0,144).  The total width of this section is (60-0=) 60 pixels.  At any height, the leftmost point will be (distance from bottom)/(total height) * 60  -- that way, at the top you'll have (144/144)*60 = 60, and the bottom (0/144)*60 = 0.  Therefore, the left endpoint of the left plane will be (144-y)/144 * 60   =)

There are 8 tiles across, so the tile from left will have leftmost points (65,0) and (20,144) -- 45 pixels wide.  If this were on the left side of the screen, the formula would be (144-y)/144 * 45 - but since the leftmost part is 20 pixels from the left, we have to add 20.  We get (144-y)/144 * 45 + 20

(the right endpoint of the leftmost tile will be 1 less than that =)

Continue that across until you get halfway there.  The just copy the left side values you have backwards, replacing each value will (160-value).  You'll have a full table, as confusing as it may be. . .