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Fun with surveyors

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(@holy-cow)
Posts: 25292
Topic starter
 

What do the following locations have in common?

New Orleans, LA
Forrest, Manitoba, Canada
The middle of nowhere in Mexico State, Mexico
Fredericktown, PA
The tri-corner to Alberta/Saskatchewan/Northwest Territories

 
Posted : 22/07/2017 5:12 pm
(@paden-cash)
Posts: 11088
 

They're all about separated by 10 degrees of longitude?

ps - I just found out I get vertigo if I watch GE zoom out from Canada and then zoom into Mexico...

 
Posted : 22/07/2017 7:46 pm
(@holy-cow)
Posts: 25292
Topic starter
 

You are on the correct track but you have more to discover.

 
Posted : 23/07/2017 5:37 am
(@bill93)
Posts: 9834
 

On some projection they are points on a right triangle?

 
Posted : 23/07/2017 4:21 pm
(@holy-cow)
Posts: 25292
Topic starter
 

Really, it's not that difficult. I can figure it out on my fingers and toes.

 
Posted : 23/07/2017 6:48 pm
(@lee-d)
Posts: 2382
Registered
 

I'm assuming it has to do with the fact that 30N 90W is in NOLA, 20N 100W is in Mexico State, and 40N 80W is in Fredericktown. the other two appear to be 50N 100W and 60N 120W... Not seeing the pattern beyond the obvious intersections of parallels and meridians.

 
Posted : 24/07/2017 5:18 am
(@holy-cow)
Posts: 25292
Topic starter
 

DING DING DING, WE HAVE A WINNER!

Each location is at or very close to being at the junction of latitudes and longitudes that are both evenly divisible by 10.

The tri-corner in Canada makes sense that way, I suppose.

 
Posted : 24/07/2017 5:24 am
(@mark-mayer)
Posts: 3363
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Lee D, post: 438371, member: 7971 wrote: I'm assuming it has to do with the fact that 30N 90W is in NOLA and 40N 80W is in Fredericktown

60N 110W is the Alberta/Saskatchewan tricorner.

 
Posted : 24/07/2017 5:24 am
(@lee-d)
Posts: 2382
Registered
 

Mark Mayer, post: 438374, member: 424 wrote: 60N 110W is the Alberta/Saskatchewan tricorner.

Yep I looked at the wrong tricorner - Alberta, Northwest Territories, and BC is at 60N 120W

 
Posted : 24/07/2017 5:31 am
(@holy-cow)
Posts: 25292
Topic starter
 

We number people are a crazy lot, eh?

 
Posted : 24/07/2017 6:12 am
(@paden-cash)
Posts: 11088
 

Holy Cow, post: 438381, member: 50 wrote: We number people are a crazy lot, eh?

Glad you solved that for us...I kept looking, but that details escaped me.

 
Posted : 24/07/2017 6:51 am
 vern
(@vern)
Posts: 1520
Registered
 

They are all even 10 degrees lat. and long.

 
Posted : 24/07/2017 4:29 pm