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Geometric Origami is a book on the mathematics of paper folding, focusing on the ability to simulate and extend classical straightedge and compass constructions using origami. It was written by Austrian mathematician Robert Geretschläger [ de ] and published by Arbelos Publishing (Shipley, UK) in 2008.
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A Simple polygon: Date: 16 June 2007, 04:08 (UTC) Source: Own work (Original text: self-made. I just vectorized the image at File:Simple polygon.png, with Inkscape) Author: Oleg Alexandrov: Other versions: Derivative works of this file: Decoupage polygone triangles.svg: SVG development
Handheld Brise fan from 1800. A handheld fan, or simply hand fan, is a broad, flat surface that is waved back-and-forth to create an airflow. Generally, purpose-made handheld fans are folding fans, which are shaped like a sector of a circle and made of a thin material (such as paper or feathers) mounted on slats which revolve around a pivot so that it can be closed when not in use.
Church fan depicting two African-American girls praying. A church fan is a term used mainly in the United States for a hand fan used within a Christian church building to cool oneself off. The fan typically has a wooden handle and a fan blade made of hard stock paper (i.e. card-stock, 2-ply), often with a staple adjoining the two materials.
One can use the polygon/star tool (make sure that it's set to "polygon", checkbox at top, and that it's set to 6 corners). Hold down "ctrl" while drawing the first hexagon to get the angles straight. If you only want the hexagon for aliphatic backbones, you can now convert the hexagon to a path (Path -> Object to path) so that you can ...
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Fan (geometry), the set of all planes through a given line; Fan (order), a class of preorderings on a field; FAN algorithm, an algorithm for automatic test pattern generation; Fan triangulation, a fast method to decompose a convex polygon in triangles.fan filename extension for the Fantom (programming language)