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The surveying perch measured 22 French feet. In French North America, it was also equal to 25 square perches, but the royal perch of 18 feet was used, yielding a vergée of 8100 square feet (854.7 m 2) In Guernsey, a vergée (Guernésiais: vergie) is 17,640 square feet (1,639 m 2). It is 40 (square) Guernsey perches. A Guernsey perch (also ...
The rod, perch, or pole (sometimes also lug) is a surveyor's tool [1] and unit of length of various historical definitions. In British imperial and US customary units, it is defined as 16 + 1 ⁄ 2 feet, equal to exactly 1 ⁄ 320 of a mile, or 5 + 1 ⁄ 2 yards (a quarter of a surveyor's chain), and is exactly 5.0292 meters.
Rood is an English unit of area equal to one quarter of an acre [2] or 10,890 square feet, exactly 1,011.7141056 m 2. A rectangle that is one furlong (i.e., 10 chains , or 40 rods) in length and one rod in width is one rood in area, as is any space comprising 40 perches (a perch being one square rod).
A square 5 perches on each side, or one quarter of an acre. acre, or arpent carré: 48 400 ~5107 m 2 ~6108 sq yd, or ~1.262 acres The French acre is a square 10 perches (one arpent) on each side. (Does not exactly correspond to the English acre, which is defined as 43 560 square feet.) North America: perche du roi carrée: 324 ~34.19 m 2 ~40.89 ...
Following Grünbaum and Shephard (section 1.3), a tiling is said to be regular if the symmetry group of the tiling acts transitively on the flags of the tiling, where a flag is a triple consisting of a mutually incident vertex, edge and tile of the tiling. This means that, for every pair of flags, there is a symmetry operation mapping the first ...
The only thing that changed was the number of feet and yards in a rod or a furlong, and the number of square feet and square yards in an acre. The definition of the rod went from 15 old feet to 16 + 1 ⁄ 2 new feet, or from 5 old yards to 5 + 1 ⁄ 2 new yards. The furlong went from 600 old feet to 660 new feet, or from 200 old yards to 220 ...