frame of ural and contents based on length

this continues theme of previous post with some tweaking.
when i look at a map or a globe what catches my eye? big vast russia.
it is on the continent named asia but better named ural continent to include both sides of the ural mountains.
umtil then, the western most part is by "nile" continent [africa] although we should fix both names.
the first part of that continent to see the sunrise appear in the east is not in south but north.
the shape is not rectangle instead it is like stretching the corner of  rectangle, as if the northern part was pulled east and less west by ural mountains while in the south it is pulled west and not east by coast.
to accurately map it i suggest starting at the western most edge near africa. until we upgrade the bad ural difvision
that is near 30/30 at 30 degrees likeone third of section of circle from equator.
what city on east side is also 30 degrees? shanghai is around 30 degrees north of equator like cairo.
the length of the continent from edge to coast is over 8000 kilometer around 8300 kilometer and from cairo near edge to india border 4071km north west of new delhi and morre 4530 kilometer to shanghai total near 30 degrees is far 8600 km.
we could make the edges of asia curved following due north from cairo and the map would have two curved sides. however i suggets making a map based on LENGTH with straight sides not all land but as much as easily inclusive about this continent.
we could also start by spain but more important to define the ;land than the name of continent os first asia and later upgrade to ural.
we will use the 30 degrees curved as a symbol for the vertical edge of the map and not mimic the curve called due north and we can also imaginre that the center line of the longitude lines is the one by cairo.
due north of cairo is sp saint pertesberg selected because edge of balti water and due north of cairo also 30 degrees meaning due north, at 60/30.
we may define cairo near the continental joint as point a and shanghai due east also around 30 degrees north of equator as point b the length between a and b is as above 8600 km.
what if we measure 8600 kilometer from sp? that could make a straight edge vertical line along the east to frame the map of the continent.
sp 60/30 what about surgut also 60n like sp.2330km+3600km to coast called sea of okhotsk totals 5930km so to make the map BASED ON LENGTH it must extend beyond japan. magadan russia is 60/150 like sp, yet east of tokyo japan which is 140e, so this further east yet only add from surgut to magadan 485 more 6400 km. far less than the south part. 8600km by 2200 kilometers. to make a map based on length must add 2200 kilometrs to define the frame. almost to alaska only 200 kilometers from alaska coast  and that seems far east from shanghai... yet the length should show align the waters near alaska align with shanghai.
how much to "stretch" the part between shanghai at 30 degrees and 60 degrees?  4900 to south of quad-joint c-k-m-r and to coast 3427 total 8330 kilometer less than length to shanghai by 250 kilometer. so 250km beyond coast aligns by LENGTH between shanghai and alaska this can define the degree of stretching or squeezing based on the length of x axis only.
 and the points between shanghai and korea coast can be stretched or squeezed by the diagonal and from that point to alaska coast.
we can repeat the process for other continents sucghas mississippi continent to define the length.