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The construction of origami models is sometimes shown as crease patterns. The major question about such crease patterns is whether a given crease pattern can be folded to a flat model, and if so, how to fold them; this is an NP-complete problem. [32] Related problems when the creases are orthogonal are called map folding problems.
The arrangement of pegs on the board constrains the possible patterns that can be produced on that board. Most fuse-beading is done on a square grid pegboard, but there are other arrangements like hexagonal grids. [4] Tweezers can be used to make bead placement easier. Square grids enable recreating pixel art.
Maths Mansion was a British educational television series for school Years 4 to 6 (nine to eleven year olds) that ran from 19 September 2001 to 26 March 2003. Produced by Channel 4 by Open Mind, It follows the adventures of "Bad Man" taking kids to his mansion, Maths Mansion.
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An overlapping circles grid is a geometric pattern of repeating, overlapping circles of an equal radius in two-dimensional space. Commonly, designs are based on circles centered on triangles (with the simple, two circle form named vesica piscis ) or on the square lattice pattern of points.
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Grid-cell activity does not require visual input, since grid patterns remain unchanged when all the lights in an environment are turned off. [1] But when visual cues are present they exert strong control over the alignment of the grids: rotating a cue card on the wall of a cylinder causes grid patterns to rotate by the same amount. [1]