User:Piphi/AoPS Wiki

Welcome to Piphi's Wiki!

The Piphi Wiki project is administered by piphi for supporting educational content useful to avid math students.

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Problem of the Week

2001 AMC 10, Problem 20

A regular octagon is formed by cutting an isosceles right triangle from each of the corners of a square with sides of length . What is the length of each side of the octagon?

Recent Changes

• 2009 AMC 10A Problems‎
• 2025 AMC 10A Problems/Problem 2‎
• 2014 AMC 10A Problems/Problem 10‎
• 2021 AMC 10A Problems/Problem 25‎
• User:Yrock‎

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It is Monday August 11, 2025, 03:54 (GMT).
There have been 262,474 edits to 10,740 articles since January, 2006.

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