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32-point compass rose. The points of the compass are a set of horizontal, radially arrayed compass directions (or azimuths) used in navigation and cartography.A compass rose is primarily composed of four cardinal directions—north, east, south, and west—each separated by 90 degrees, and secondarily divided by four ordinal (intercardinal) directions—northeast, southeast, southwest, and ...
Direction determination refers to the ways in which a cardinal direction or compass point can be determined in navigation and wayfinding.The most direct method is using a compass (magnetic compass or gyrocompass), but indirect methods exist, based on the Sun path (unaided or by using a watch or sundial), the stars, and satellite navigation.
Geometry. In geometry, straightedge-and-compass construction – also known as ruler-and-compass construction, Euclidean construction, or classical construction – is the construction of lengths, angles, and other geometric figures using only an idealized ruler and a pair of compasses. The idealized ruler, known as a straightedge, is assumed ...
The compass was invented in China during the Han dynasty between the 2nd century BC and 1st century AD where it was called the "south-governor" (sīnán 司南) or "South Pointing Fish" (指南魚). [3] The magnetic compass was not, at first, used for navigation, but for geomancy and fortune-telling by the Chinese.
Compass. A modern military compass, with included sight device for aligning. A compass is a device that shows the cardinal directions used for navigation and geographic orientation. It commonly consists of a magnetized needle or other element, such as a compass card or compass rose, which can pivot to align itself with magnetic north.
t. e. Homeschooling constitutes the education of about 3.4% of U.S. students (approximately two million students) as of 2012. [needs update] The number of homeschoolers in the United States has increased significantly over the past few decades since the end of the 20th century. In the United States, the Supreme Court has ruled that parents have ...
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