AoPS Wiki:Problem of the Day/September 12, 2011
< AoPS Wiki:Problem of the Day
Revision as of 16:36, 12 September 2011 by Negativebplusorminus (talk | contribs) (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>[...")
In trapezoid ABCD, AD ||BC. $\angle A = \angle D = 45\dgg$ (Error compiling LaTeX. Unknown error_msg), while $\angle B = \angle C =135\dgg$ (Error compiling LaTeX. Unknown error_msg). If AB=6 and the area of ABCD is 30, find BC.
