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Mirror, Mirror...

Age 11 to 14 Challenge Level:

Isabel from St Andrew's Scots School in Argentina used Geogebra to investigate the problem. This is Isabel's work, with some teacher comments.

     

 Alice, George, Kyle, Tom, Nell and Alex from Gorseland Primary School explained why this happens:


solution


Isabel went on to investigate what happens for different shapes, and if the shape is reflected in the other mirror line first.