Question 85449
The diagonal of a rectangle is 8cm and the diagonal makes a 45 degree angle with a side. Find the dimensions of the rectangle. 
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If it makes a 45 degree angle with the side the rectangle is a square.
If the diagonal is 8 and the sides are respectively "x", by Pythagoras
you get x^2 + x^2 = 8^2
2x^2 = 64
x^2 = 32
x = 4sqrt2
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Cheers,
Stan H.