Isogonic lines connect points having the same what?

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Study for the Pilot's Handbook of Aeronautical Knowledge Exam. Study with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

Multiple Choice

Isogonic lines connect points having the same what?

Explanation:
Isogonic lines are lines of equal magnetic variation, which is the angular difference between true north and magnetic north at a location. They connect points where the amount of this variation is the same, helping pilots convert between true courses and magnetic courses on charts. Variation changes with location and time, so these lines show where the magnetic reference differs by a constant amount. Temperature, pressure, or wind direction are not related to magnetic variation, so they do not form isogonic lines.

Isogonic lines are lines of equal magnetic variation, which is the angular difference between true north and magnetic north at a location. They connect points where the amount of this variation is the same, helping pilots convert between true courses and magnetic courses on charts. Variation changes with location and time, so these lines show where the magnetic reference differs by a constant amount. Temperature, pressure, or wind direction are not related to magnetic variation, so they do not form isogonic lines.

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