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squares around parallelogram
Author:
Arthur Lee
Topic:
Parallelogram
,
Square
Open the task sheet:
https://www.evernote.com/l/AAPkK3E9enNHAKc6KqQPOUW77qJNNl5Hz7I
GeoGebra
Thebault's Theorem
http://nrich.maths.org/1939
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