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A file is a tool used to remove fine amounts of material from a workpiece. It is common in woodworking, metalworking, and other similar trade and hobby tasks. Most are hand tools, made of a case hardened steel bar of rectangular, square, triangular, or round cross-section, with one or more surfaces cut with sharp, generally parallel teeth. A ...
Rectangle packing. Rectangle packing is a packing problem where the objective is to determine whether a given set of small rectangles can be placed inside a given large polygon, such that no two small rectangles overlap. Several variants of this problem have been studied.
In geometry, a golden rectangle is a rectangle whose side lengths are in the golden ratio, : +, which is : (the Greek letter phi), where is approximately 1.618.. Golden rectangles exhibit a special form of self-similarity: All rectangles created by adding a square to a side, or removing a square from an end, of a golden rectangle are golden rectangles as well.
In signal processing and statistics, a window function (also known as an apodization function or tapering function [1]) is a mathematical function that is zero-valued outside of some chosen interval. Typically, window functions are symmetric around the middle of the interval, approach a maximum in the middle, and taper away from the middle.
In practice, suboptimal rectangular packings are often used to simplify decoding. Circle packing has become an essential tool in origami design, as each appendage on an origami figure requires a circle of paper. Robert J. Lang has used the mathematics of circle packing to develop computer programs that aid in the design of complex origami figures.
Tool size: This can be determined by either weight or dimensions and typically divided into either large or small scrapers. Tool shape: There are many different shapes scrapers can be, including rectangular, triangular, irregular, discoidal, domed, or keeled. In many cases it can be hard to determine the classification for the shape of the scraper.
The following flags have a distinctive aspect ratio: Belgium: Aspect ratio of 13:15. El Salvador: Aspect ratio of 189:335. Monaco: Aspect ratio of 4:5. Nepal: The only national flag that is not rectangular, being made with 5 sides, and the only one that is higher than wide. Bordering aspect ratio of ~ 6:5.
A try square or try-square is a woodworking tool used for marking and checking 90° angles on pieces of wood. Though woodworkers use many different types of square, the try square is considered one of the essential tools for woodworking. [1] The square in the name refers to the 90° angle. To try a piece of wood is to check if the edges and ...