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In order for Karate Kid, Ethan Measure, to win the symmetry medal, he must find the line of symmetry on various objects and karate chop along that line. An explanation of finding a line of symmetry is given and demonstrated using a mirror. Ethan then has to chop a pineapple. At first he gets it wrong, checking in the mirror. Ethan鈥檚 mum has prepared a selection of objects for him to practise on. Three questions of increasing difficulty challenge us to identify the line or lines of symmetry, while we learn that some objects are not symmetrical at all.