The boundary is an approximate equidistant line between the two islands.

Like the first part, this portion of the boundary is an approximate equidistant line between the two countries.

The boundary is an equidistant line between the nearest islands of the two states.

The boundary is an approximately equidistant line between the two territories.

The boundary is approximately 650 nautical miles long and is a modified equidistant line.

Therefore it is not an "equitable basepoint for an equidistant line".

Every point on line m is located at exactly the same minimum distance from line l (equidistant lines).

In general, equidistant lines are not geodesics so the equidistant definition cannot be used.

Such an equidistant line is normally how maritime borders are drawn between two countries, though this approach is not compulsory.

Let us consider two patterns made of parallel and equidistant lines, e.g., vertical lines.