Geometry of the Sphere - Spatial Mathematics: Theory and Practice through Mapping - page 7

N

50°

40°

30°

20°

42° 21 ′ 30 ′′

10°

71° 03 ′ 37 ′′
Longitude W

0°

70°

60° 0°

50° 10°

40° 20°

30°

Figure 1.4 Latitude and longitude as angular measures in relation to the center of the
Earth-sphere. Source: Based on GeoSystems Global Corporation (later MapQuest)
image, 1998.

Parallels
of
latitude

Meridians
of
longitude

Graticule

Figure 1.5 Earth-sphere graticule composed of parallels and meridians. Source: Based
on GeoSystems Global Corporation (later MapQuest) image, 1998.