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2005 Alabama ARML TST Problems/Problem 11

Revision as of 23:21, 3 March 2008 by 1=2 (talk | contribs) (See also)

Problem

In concave hexagon $ABCDEF$, $\angle  A = \angle B = \angle C = 90^\circ$, $\angle D = 100^\circ$, and $\angle F = 80^\circ$. Also, $CD=FA$, $AB=7$, $BC=9$, and $EF+DE=12$. Compute the area of the hexagon.

Solution

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See also

2005 Alabama ARML TST (Problems)
Preceded by:
Problem 10
Followed by:
Problem 12
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