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Age 14 to 16 Short
Challenge Level
A has coordinates (4,4) and B is obtained by rotating A about the origin O through an angle of 135 ยบ anti-clockwise.
Calculate the area of triangle AOB.
This problem is taken from the World Mathematics Championships
You can find more short problems, arranged by curriculum topic, in our short problems collection.
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NRICH is part of the family of activities in the Millennium Mathematics Project.
NRICH is part of the family of activities in the Millennium Mathematics Project.