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THOMAS & ANDREWS.BOSTON. 1796

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)Geographic Coordinate System(

EEastWWest.

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A A

:60 E 55 N

90

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AX1, Y1) (B)X2, Y2 (:

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Distance = (X1-X2)² + (Y1-Y2) ²2

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GCS.

UTM)Universe Transverse Mercator ( )Zones (

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NS Zone

38 NZone 37 N.NAD27)North American Datum 1927 (

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Zone 38 N

Zone 38 S

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NAD27

NAD83)North

American Datum1983 ( WGS84)World Geodetic System 1984( .

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WGS84NAD83

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NAD27

WGS84

ArcGIS.

GCS NAD27

GCS WGS84

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GCSor

UTM

NADor

WGS

ANAD27) X = 4928000m ,Y = 3688000m (

UTM WGS84 .

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3688

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