how do they know where the 0 mile marker starts and where any of them go for that matter?
443893
It starts at the state line and counts up going north and west.  If you're going south or east on a long road trip it's nice because you always know how far it is to the next state line.\n\nAnother interesting fact, north-south highways always have odd numbers, east-west always have even numbers, and loops have 3 digits, the last 2 being the main highway they are bypassing.  This information has kept me from driving for hours in the wrong direction more than once :)
500997
every point\nif you walk continuously on that direction you will be in your starting point
38995
In this situation a compass needle will not point to anywhere on the dial very strongly - it will just wander around weakly with no real direction. Explorers now need GPS to determine the exact pole location; it shifts slightly every year.\n\nDC :-)
513
That's the trouble with answers that give no explanation. Who can you believe?\n\nSince we go in each direction once, the ORDER of the moves doesn't matter. \n\nDraw a grid. Start at 0,0\n10 North means 0,10 You are due north 10 miles. Then we come back south 6 miles, so we're 4 miles north of where we started. \n4 miles east and then 7 west means we're 3 miles west of the starting point. \n\nDraw a right triangle 4 miles up and then 3 miles to the left of the starting point. We want the hypotenuse of the triangle whose sides are 3 and 4. \nTime for Pythagoras: a^2 + b^2 = c^2 \n3^2 + 4^2 = c^2 \n9 + 16 = 25 Take the square root of that for your final distance. Direction: NW
1137457
Leave point A going north, when you get to the first red light stop till it turns green, take a left for three blocks, then take a U-turn and go five blocks. point B is right in the middle of the block.
532229
Go to mapquest.com , it will tell you exactly how many miles!
145550
Type in Mississippi River on your yahoo search bar and it will bring up several places to search. The one that says Mississippi River is a good one it tell where the river starts and ends. Also tell how long it is ect. Lots of Info there. See for yourself biology.usgs.gov/s+t/SNT/noframe/ms137.htm
732091
How can we know where would we be... if we don't have maps?
629028
Unless it is a very new road you can use www.mapquest.com\n\nIt will even give you directions.
589871
If you mean to measure the distance covered, the answer is probably no. You can use ViaMichelin or MultiMap if you're sticking strictly to roads, but if you're going off-road then you need something more specific.\n\nThe simplest solution is a handlebar mounted bike computer. In addition to an accurately set-up computer I also use a Garmin eTrex GPS matched to MemoryMap on my PC. \n\nThe Garmin and my computer correlate well for mileage and I upload my tracks into MemoryMap - I get the precise trail I've covered overlaid on a detailed map and loads of other useful information about altitude, ride gradient profile, average time, etc. Best of all I can save the best trails and at any time in the future I can re-download them to the Garmin so I can exactly ride the same route again.
1108097
Everywhere and nowhere, Like asking where does a circle end and begin?
305910
Need more info to be able to give you any sort of direction
7571
map makers esentiallt did what is known as graphing.  what they did is basically take a piece of graphing pad marking out latitudes and longatudes respectively. they then took measurements as to where they were with a device known as a sextant which they use to determine thire position on the planet LAT/LONG by using the stars as they traveled they marked on the grid paper what thier lat/long was then simply connected the dots this technique can be used to mark coastlines  or if inland plot your course (eg make a line on the map known to be dry land) this course can then be translated to be the border between utah and montana for example the lines for borders between states were mostly arbatrary some were set forth by the gov't where the lines were to be drawn others may have been a natural boundary such as a river or other waterway.\n\ni hope that is what you were looking for
254265
Your count starts with the point Zero.\n\n\nzero m  1\nTwo m   2  \nFour m  3\n\n100m    51\n\nhttp://www.futureaccountant.com/\n\nhttp://www.schoolingkids.com/
39966
Zero degrees longitude.\n\nMore specifically: The Prime Meridian is the meridian (line of longitude) passing through the Royal Greenwich Observatory, Greenwich, England; it is the meridian at which longitude is 0 degrees. It is often referred to as the Greenwich Meridian.
1164215
The inner lane.\n\nThe official measurement for a track is taken 30cm (about a foot) away from the curb.\n\nThe only time you run in the middle of the track is if you run a race like the 400m where you run the whole race in your assigned lane or one where you run in an assigned lane for one turn before you are allowed to break to the curb.
453658
All GPS can tell you is your location on the earth. GPS cannot tell you where your property corners are, unless you already know the coordinates of those property corners. Your GPS unit does not know where your property corners are until you provide it with the information it needs. \n\nIf you knew the coordinates, which could be either latitude and longitude that mappers use, or state plane coordinates that surveyors use, then you could use GPS to guide you to the corner locations. But since you do not know where the corners are, you have no way of entering the required data into the GPS unit. \n\nYou not only need to get a professional surveyor to survey your property, you also need to tell the surveyor that you need him to provide you with the state plane coordinates of those points, so you can enter them into your GPS unit, then you will be able to find them yourself in the future.