A triangle fix is formed by:

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Multiple Choice

A triangle fix is formed by:

Explanation:
A triangle fix comes from using three independent lines of position. Each line of position is a locus where you could be based on a measurement (bearing, radar, celestial observation, etc.). When you have three such observations, you draw three lines. The intersections of each pair of lines give three points, which form a triangle. The navigator’s true position is inside that triangle, and the triangle itself represents the bounded area of possible positions given the inevitable measurement errors. With only two lines, you’d get a single intersection point (a two-line fix), not a triangle. A line paired with a circle around a known point or a single line of position alone doesn’t create the triangular region needed for a triangle fix.

A triangle fix comes from using three independent lines of position. Each line of position is a locus where you could be based on a measurement (bearing, radar, celestial observation, etc.). When you have three such observations, you draw three lines. The intersections of each pair of lines give three points, which form a triangle. The navigator’s true position is inside that triangle, and the triangle itself represents the bounded area of possible positions given the inevitable measurement errors. With only two lines, you’d get a single intersection point (a two-line fix), not a triangle. A line paired with a circle around a known point or a single line of position alone doesn’t create the triangular region needed for a triangle fix.

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