Question 816227
 Area of a square with side x is equal to the area of a triangle with base x. The altitude of a triangle is 
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Area of square:: x^2
Area of triangle:: (1/2)x*h
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Equation:
(1/2)x*h = x^2
xh = 2x^2
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h = 2x
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altitude of the triangle = 2x
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Cheers,
Stan H.