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The 'exterior' or 'external bisector' is the line that divides the supplementary angle (of 180° minus the original angle), formed by one side forming the original angle and the extension of the other side, into two equal angles. [1] To bisect an angle with straightedge and compass, one draws a circle whose center is the vertex. The circle ...
The water flows in from the lower section of the image and passes on both sides of the large island in the center. River bifurcation (from Latin : furca , fork) occurs when a river (a bifurcating river ) flowing in a single channel separates into two or more separate streams (called distributaries ) which then continue downstream .
one of four equal parts into which something is divided, as a quarter-hour or, especially for financial purposes, a quarter of a year; in generic usage (as in fractions), US usu. fourth: 25 cents (a fourth of a dollar) queue a group of persons, usually waiting for something, arranged in order of arrival *(US: line)
one of four equal parts into which something is divided (UK & US sometimes also quarter, q.v.). (proper noun, used with the) short for The Fourth of July (America's Independence Day) fringe arrangement of locks of hair on the forehead (US: bangs) the outer area of something a decorative border e.g. on clothing
Also amphidrome and tidal node. A geographical location where there is little or no tide, i.e. where the tidal amplitude is zero or nearly zero because the height of sea level does not change appreciably over time (meaning there is no high tide or low tide), and around which a tidal crest circulates once per tidal period (approximately every 12 hours). Tidal amplitude increases, though not ...
The littoral zone, also called litoral or nearshore, is the part of a sea, lake, or river that is close to the shore. [1] In coastal ecology, the littoral zone includes the intertidal zone extending from the high water mark (which is rarely inundated), to coastal areas that are permanently submerged — known as the foreshore — and the terms are often used interchangeably.
A polyptych (/ ˈ p ɒ l ɪ p t ɪ k / POL-ip-tik; Greek: poly-"many" and ptychē "fold") is a work of art (usually a panel painting) which is divided into sections, or panels. Some definitions restrict "polyptych" to works with more than three sections: [ 1 ] a diptych is a two-part work of art; a triptych is a three-part work; a tetraptych or ...
A drainage divide, water divide, ridgeline, [1] watershed, water parting or height of land is elevated terrain that separates neighboring drainage basins. On rugged land, the divide lies along topographical ridges , and may be in the form of a single range of hills or mountains , known as a dividing range .