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How to connect the nine dots with four straight lines?

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Nine dots are placed in three rows of each three dots, as shown in the picture. These nine dots must be connected by four straight, connected lines (i.e. without 'lifting up the pen' in between).
enter image description here

posted Feb 19, 2014 by Luv Kumar

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1 Answer

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answer Mar 30, 2014 by Hiteshwar Thakur

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