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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 , tiles , and wallpaper .
The syllabus for the State Board School Examinations (Sec.) & Board of Higher Secondary Examinations, Tamil Nadu (SBSEBHSE) varies depending on the class and stream (Science, Commerce, Arts). [17] Class 10th (SSLC) Syllabus: The class 10th syllabus covers core subjects like Mathematics, Science, Social Science, language Tamil, English, and ...
All India Secondary School Examination, commonly known as the class 10th board exam, is a centralized public examination that students in schools affiliated with the Central Board of Secondary Education, primarily in India but also in other Indian-patterned schools affiliated to the CBSE across the world, taken at the end of class 10. The board ...
One class that can be generated in this way is the rep-tiles; these tilings have unexpected self-replicating properties. [36] Pinwheel tilings are non-periodic, using a rep-tile construction; the tiles appear in infinitely many orientations. [37] It might be thought that a non-periodic pattern would be entirely without symmetry, but this is not so.
The general layout, too, is usually present, with arrangements such as stripes, stripes alternating with rows of motifs, and packed arrays of roughly hexagonal motifs. The field is commonly laid out as a wallpaper with a wallpaper group such as pmm, while the border may be laid out as a frieze of frieze group pm11, pmm2 or pma2. Turkish and ...
Formally, a frieze group is a class of infinite discrete symmetry groups of patterns on a strip (infinitely wide rectangle), hence a class of groups of isometries of the plane, or of a strip. A symmetry group of a frieze group necessarily contains translations and may contain glide reflections , reflections along the long axis of the strip ...
Broken down, 3 6; 3 6 (both of different transitivity class), or (3 6) 2, tells us that there are 2 vertices (denoted by the superscript 2), each with 6 equilateral 3-sided polygons (triangles). With a final vertex 3 4 .6, 4 more contiguous equilateral triangles and a single regular hexagon.
Two children from Tamil Nadu holding a Samacheer Kalvi textbook. Samacheer Kalvi or Tamil Nadu Uniform System of School Education or Equitable education system is a School Education Department of Government of Tamil Nadu, India programme to integrate the various school educational systems within the state.