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Pattern blocks sets are multiple copies of just six shapes: Equilateral triangle (Green) 60° rhombus (2 triangles) (Blue) that can be matched with two of the green triangles; 30° Narrow rhombus (Beige) with the same side-length as the green triangle; Trapezoid (half hexagon or 3 triangles) (Red) that can be matched with three of the green ...
Thus, a wallpaper group (or plane symmetry group or plane crystallographic group) is a mathematical classification of a two‑dimensional repetitive pattern, based on the symmetries in the pattern. Such patterns occur frequently in architecture and decorative art, especially in textiles, tessellations, tiles and physical wallpaper .
Most commonly reported shapes in UFO sightings gathered by the National UFO Reporting Center Online Database ()This is a list of notable reported sightings of unidentified flying objects (UFOs) or unidentified anomalous phenomena (UAP), and related claims of close encounters or abductions.
A fire alarm notification appliance is an active fire protection component of a fire alarm system. A notification appliance may use audible, visible, or other stimuli to alert the occupants of a fire or other emergency condition requiring action. Audible appliances have been in use longer than any other method of notification.
Each triangle is one half of a rectangle. Because of 'skewX(-30)' , we see two rhombi instead of two rectangles and two equilateral triangles instead of two right triangles. In order to study the source code and the present description, here are some numbers. tan 15 o = 2 – √ 3 ; 1 / cos 15 o ≈ 1.035 ; 56 × tan 15 o ≈ 15 ;
Polygon triangulation. In computational geometry, polygon triangulation is the partition of a polygonal area ( simple polygon) P into a set of triangles, [1] i.e., finding a set of triangles with pairwise non-intersecting interiors whose union is P . Triangulations may be viewed as special cases of planar straight-line graphs.
Scale model fire engines, trucks, cars. Parent. Matrix Holdings Ltd. (2007–11) Code 3 Collectibles was an American company based in Woodland Hills, Los Angeles that created customized scale model vehicles. The company was founded by Arnie Rubin, [1] who had previously established Funrise Toy Corporation, owner of Tonka among other brands.
Rule of three ( "Three strikes and you refactor") is a code refactoring rule of thumb to decide when similar pieces of code should be refactored to avoid duplication. It states that two instances of similar code do not require refactoring, but when similar code is used three times, it should be extracted into a new procedure.