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Construct a trapezium with height . Base c is one centimetre longer than the height h. The base a measures as much as the height and the base c together, side d is half of a. is an acute angle.
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with height 
. Base c is one centimetre longer than the height h. The base a measures as much as the height and the base c together, side d is half of a. 
is an acute angle.
