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Perigon can refer to In mathematics, an angle of 360° (see Angle § Individual angles) Périgon, ...
This page was last edited on 30 June 2012, at 11:33 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may ...
Anthropomorphic Iron Age wooden cult figures, sometimes called pole gods, have been found at many archaeological sites in Central and Northern Europe. They are generally interpreted as cult images , in some cases presumably depicting deities, sometimes with either a votive or an apotropaic (protective) function.
The golden angle is the angle subtended by the smaller (red) arc when two arcs that make up a circle are in the golden ratio. In geometry, the golden angle is the smaller of the two angles created by sectioning the circumference of a circle according to the golden ratio; that is, into two arcs such that the ratio of the length of the smaller arc to the length of the larger arc is the same as ...
The fylfot or fylfot cross (/ ˈ f ɪ l f ɒ t / FILL-fot) and its mirror image, the gammadion, are types of truncated swastika, associated with medieval Anglo-Saxon culture. It is a cross with perpendicular extensions, usually at 90° or close angles, radiating in the same direction.
It was referred to as the Seabee's "magic box". It was Lego-like system of pre-cut pre-drilled angle iron and steel plate. It was first assembled into individual boxes that were joined in multiples to construct docks, causeways, barges, dry docks, floating cranes, marine railways or whatever was needed.
The plan, "Iron Dome for America," appears to emphasize countering high-end threats. Industry partners like RTX and Lockheed Martin have shown an interest in the project.
Iron sights are a system of physical alignment markers used as a sighting device to assist the accurate aiming of ranged weapons such as firearms, airguns, crossbows, and bows, or less commonly as a primitive finder sight for optical telescopes. Iron sights, which are typically made of metal, are the earliest and simplest type of sighting device.