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Kite (geometry) A kite, showing its pairs of equal-length sides and its inscribed circle. In Euclidean geometry, a kite is a quadrilateral with reflection symmetry across a diagonal. Because of this symmetry, a kite has two equal angles and two pairs of adjacent equal-length sides. Kites are also known as deltoids, [ 1 ] but the word deltoid ...
Large kite systems may require more than one pilot. In a team like the "Flying Squad" of nine kite pilots each person might fly his own sub-kite while, as a team, its kites form a unified display. [21] One pilot may simultaneously fly several kites; the pilot with several kites forms one kite system of two, three or more kites in the system ...
A kite is a tethered heavier-than-air or lighter-than-air craft with wing surfaces that react against the air to create lift and drag forces. [ 2 ] A kite consists of wings, tethers and anchors. Kites often have a bridle and tail to guide the face of the kite so the wind can lift it. [ 3 ]
Indonesians has developed a long tradition of fermentation technique, among others are tempeh, oncom, tuak, brem and tapai. Tanja sail, an Indonesian invention with global influence, because it allows ships to sail against the wind. This list of Indonesian inventions and discoveries details the indigenous arts and techniques, cultural ...
All the Indonesia Navy (Indonesian: Tentara Nasional Indonesia-Angkatan Laut, TNI-AL) vessels are named with the prefix KRI (Kapal Perang Republik Indonesia or Naval Vessel of the Republic of Indonesia). Smaller sized boats with light armaments usually have the prefix KAL (Kapal Angkatan Laut or Naval Vessel of the Indonesian Navy). The classes ...
In geometry, a convex polygon is a polygon that is the boundary of a convex set. This means that the line segment between two points of the polygon is contained in the union of the interior and the boundary of the polygon. In particular, it is a simple polygon (not self-intersecting). [1] Equivalently, a polygon is convex if every line that ...
Geometrical optics. Geometrical optics, or ray optics, is a model of optics that describes light propagation in terms of rays. The ray in geometrical optics is an abstraction useful for approximating the paths along which light propagates under certain circumstances. The simplifying assumptions of geometrical optics include that light rays:
Fighter kite. Fighter kites are kites used for the sport of kite fighting. Traditionally, most are small, unstable single-line flat kites where line tension alone is used for control, at least part of which is manja, typically glass-coated cotton strands, to cut down the line of others.