Awesome find, I give it five stars, but unfortuantely, there is an explanation. *sigh* Anyway, the slope of the diagonal line of the triangle and the diagonal line of the trapezoid aren't the same, they are slightly off. When you put the two triangles and trapezoids back together for the rectangle, the diagonal line is in fact not a line at all, but a paralellogram with an area of 1. I'm surprised no one explained this yet.
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