Posted by john on Tuesday, March 8, 2011 at 9:25am.
An isosceles trapezoid has base angles equal to 45 and bases of lengths 6 and 12. Find the area of the trapezoid.

geometry  Henry, Wednesday, March 9, 2011 at 8:35pm
h = (B1  B2) / 2 = (12  6)/2 = 3.
A = (B1+B2)h / 2 = (12+6)3 / 2 = 27.