A strip pattern is a design that extends indefinitely in one direction, AKA horizontally or vertically. Strip patterns are categorized based on their rotational ability and their reflection lines. This specific picture, due to that angle it was take is slightly distorted on the bottom, but assuming that all the pieces in the pattern are of the same size then it is considered a PM11 because when flipped sideways it has a vertical reflection line, no horizontal reflection line due to the base of each object and there is no half turn due to the same obstacle.
A strip pattern is a design that extends indefinitely in one direction, AKA horizontally or vertically. Strip patterns are categorized based on their rotational ability and their reflection lines. This specific picture, due to that angle it was take is slightly distorted on the bottom, but assuming that all the pieces in the pattern are of the same size then it is considered a PM11 because when flipped sideways it has a vertical reflection line, no horizontal reflection line due to the base of each object and there is no half turn due to the same obstacle.
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