What is another word for agonic line?
Pronunciation: [aɡˈɒnɪk lˈa͡ɪn] (IPA) 
The agonic line is an imaginary line on the Earth's surface where the magnetic declination or compass variation is zero. This means that the magnetic north and true north align, resulting in no deviation for compass readings. Synonyms for the agonic line include the isogonal line and the line of zero declination. These terms all refer to the same geographic location where magnetic north and true north coincide. The agonic line is constantly moving due to the Earth's magnetic pole shifting, and cartographers must update maps periodically to reflect changes in declination. Understanding the agonic line is crucial for accurate navigation and mapping.
