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Problem at the Art Gallery

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Visit this site: http://www.maa.org/mathland/mathland_11_4.html
Author:Ivars Peterson (MathLand)
Description: The Crystal Art Gallery was being readied for its grand opening, and I had to figure out how many guards were needed to make sure that every wall of paintings was under scrutiny. I was also ordered to keep costs as low as possible. The trouble was that the art gallery had a distinctive shape. Its walls didn't meet at the usual right angles. Instead, its perimeter consisted of 11 walls forming a highly irregular, sharply cornered, deeply indented polygon. It seemed to me that one way to find a solution to my art gallery problem was to subdivide the 11-sided polygon into triangles...
Levels: Middle School (6-8), High School (9-12), College
Languages: English
Resource Types: Problems/Puzzles, Articles
Math Topics: Triangles and Other Polygons

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