| 1 minute of arc along the meridian at low latitudes measures a greater distance than 1 minute of arc along the meridian at high latitudes. |
| 1 minute of arc along the meridian at 0°N/S measures the same distance as 1 minute of arc at 90°N/S. |
| 1 minute of arc along the equator measures the same distance as 1 minute of arc along the meridian at a latitude of 45°N/S. |
| 1 minute of arc along the equator measures a greater distance than 1 minute of arc along themeridian at a latitude of 45°N/S. |
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