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The "nine dots" puzzle. The puzzle asks to link all nine dots using four straight lines or fewer, without lifting the pen. The nine dots puzzle is a mathematical puzzle whose task is to connect nine squarely arranged points with a pen by four (or fewer) straight lines without lifting the pen or retracing any lines.
In three dimensions, there are an infinite number of point groups, but all of them can be classified by several families. C n (for cyclic) has an n-fold rotation axis.. C nh is C n with the addition of a mirror (reflection) plane perpendicular to the axis of rotation (horizontal plane).
Mathematics and art are related in a variety of ways.Mathematics has itself been described as an art motivated by beauty.Mathematics can be discerned in arts such as music, dance, painting, architecture, sculpture, and textiles.