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This is a list of stone circles located in the Scottish Borders council area of Scotland. The Royal Commission on the Ancient and Historical Monuments of Scotland records 16 stone circles in the Scottish Borders .
The Twelve-Mile Circle Diagram of the Twelve-Mile Circle, the Mason-Dixon Line, and The Wedge. The diagram shows the survey lines involved in the disputes, not current borders. The Twelve-Mile Circle is an approximately circular arc that forms most of the boundary between Delaware and Pennsylvania. It is a combination of different circular arcs ...
The slightly smaller circle, named the “Nonakado” circle, is 42 meters in diameter and is located around 90 meters away, separated from the “Manza” circle by Akita Prefectural Route 66. Each circle is made from rounded river stones brought from another river approximately 7 kilometers away.
Mostly because of the difficulty of surveying the Twelve-Mile Circle tangent point and the Tangent Line, astronomer Charles Mason and surveyor Jeremiah Dixon were hired. This complex border became known as the Mason–Dixon line. There turned out to be a small wedge of land between 39° 43′ N latitude, the Twelve-Mile Circle, and the North Line.
The Arctic Circle, at roughly 66.5° north, is the boundary of the Arctic waters and lands. The Arctic Circle is one of the two polar circles, and the northernmost of the five major circles of latitude as shown on maps of Earth at about 66° 34' N. [1] Its southern counterpart is the Antarctic Circle.
The Transpeninsular Line (at approximately 38°27′ N) is a surveyed line, the eastern half of which forms the north–south border between Delaware and Maryland. The border turns roughly north from the midpoint of the line towards the Twelve-Mile Circle, which forms much of the remainder of the Delaware land border.
Part of the border between Western Sahara (claimed by Morocco) and Mauritania. 25°N: Part of the border between Mauritania and Mali. 22°N: Much of the border between Egypt and Sudan, partly disputed (see also Hala'ib Triangle). 20°N: A short section of the border between Libya and Sudan, and within Sudan, the northern border of the Darfur ...
Antarctic Circle; Arctic Circle; Border; International Date Line; Latitude, including the Equator, the Tropic of Capricorn and the Tropic of Cancer; Longitude, the Prime Meridian [1] Any axis about which an object spins is an imaginary line.