How is the Shabbat boundary measured for a city that is circular, triangular, or has many sides?
Synopsis
A non-rectangular city is inscribed within a rectangle aligned to the cardinal directions, and the 2000-amah boundary is measured from the sides of that rectangle. This allows residents to 'gain' the corners — the space between the rectangle and the actual city shape counts as part of the city.
More in Yom Tov — General Principles
How is the 2000-amah Shabbat boundary measured for a city that is long and narrow, or square but not aligned with the cardinal directions?
3 opinions
Must the circumscribed rectangle for a non-rectangular city be aligned to the cardinal directions?
2 opinions
How is the Shabbat boundary measured for a city that is wide on one end and narrow on the other?
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How is the Shabbat boundary measured for a city shaped like a gamma (Γ) or an arc (bow), when the distance between the two tips is less than 4000 amot?
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How is the Shabbat boundary measured for a city shaped like an arc when the distance between the two tips is 4000 amot or more?
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Does a dwelling located outside the city but within 70 amot and two-thirds cause the boundary to be measured from it rather than from the city?
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What types of structures outside the city can serve as an extension of the city for teḥum measurement purposes?
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When two towns are located 141 and one-third amot apart, are they treated as one city for teḥum measurement?
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