geometry
posted by john .
An isosceles trapezoid has base angles equal to 45 and bases of lengths 6 and 12. Find the area of the trapezoid.

h = (B1  B2) / 2 = (12  6)/2 = 3.
A = (B1+B2)h / 2 = (12+6)3 / 2 = 27.
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