Question
| ( A ) 20 |
( B ) 30 |
( C ) 40 |
( D ) 50 |
( E ) 60 |
Hint
Solution
Origin/Difficulty
2007 AMC 10/12A, #08/ Medium - 52.85% of answering students correctly answered the question
Classifications
NCTM Standard: Geometry -- Analyze characteristics and properties of two- and three- dimensional geometric shapes and develop mathematical arguments about geometric relationships.
Mathworld.com Classification: Geometry > Plane Geometry > Triangles > Special Triangles > Other Triangles > Isosceles Triangles
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