EASA NAV(A)basic
An isogonal or isogonic line connects points with the same value of…
Answer
Variation
Explanation
An **isogonal line** joins locations with equal magnetic variation. It is used to show how the magnetic direction differs from true north over an area. **Key takeaway:** Isogonic lines depict equal variation. **Glossary:** Isogonal: having equal magnetic variation.
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