2007 AMC 12B Problems/Problem 11
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Solution
The angles in a quadrilateral add up to 360, regardless of what shape or size the figure takes. Let 
be 
, so then:
or x is around 173, choice D.
See Also
| 2007 AMC 12B (Problems • Resources) | ||
| Preceded by Problem 10 | Followed by Problem 12 | |
| 1 • 2 • 3 • 4 • 5 • 6 • 7 • 8 • 9 • 10 • 11 • 12 • 13 • 14 • 15 • 16 • 17 • 18 • 19 • 20 • 21 • 22 • 23 • 24 • 25 | ||
