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Revision history of "AoPS Wiki:Problem of the Day/September 12, 2011"

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  • (cur | prev) 15:36, 12 September 2011‎ Negativebplusorminus (talk | contribs)‎ . . (220 bytes) (+220)‎ . . (Created page with "In trapezoid ABCD, AD ||BC. <math>\angle A = \angle D = 45\dgg</math>, while <math>\angle B = \angle C =135\dgg</math>. If AB=6 and the area of ABCD is 30, find BC. <noinclude>[...")
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