AMC isosceles triangle problems
32 past AMC problems use isosceles triangle. 18 come from the AMC 10 and 14 from the AMC 12.
Picks a problem you have not seen, at about the difficulty you are handling.
Problems
Newest contests first. Every problem opens with its answer choices, hints and a worked solution.
- 2025 AMC 10A · Problem 3
- 2025 AMC 10B · Problem 5
- 2023 AMC 10B · Problem 7
- 2022 AMC 10A · Problem 13
- 2021 Fall AMC 10A · Problem 7
- 2021 Fall AMC 12A · Problem 6
- 2021 Fall AMC 12B · Problem 8
- 2021 Fall AMC 12B · Problem 10
- 2019 AMC 10A · Problem 13
- 2019 AMC 10B · Problem 16
- 2017 AMC 10B · Problem 8
- 2015 AMC 12A · Problem 20
- 2015 AMC 12B · Problem 13
- 2014 AMC 10A · Problem 22
- 2013 AMC 12A · Problem 9
- 2013 AMC 12B · Problem 16
- 2011 AMC 10B · Problem 18
- 2011 AMC 12A · Problem 13
- 2011 AMC 12B · Problem 10
- 2010 AMC 10B · Problem 6
- 2009 AMC 10B · Problem 9
- 2008 AMC 10B · Problem 24
- 2008 AMC 12A · Problem 22
- 2007 AMC 10A · Problem 8
- 2007 AMC 10B · Problem 4
- 2007 AMC 12A · Problem 6
- 2006 AMC 10A · Problem 16
- 2005 AMC 10B · Problem 10
- 2005 AMC 12B · Problem 6
- 2004 AMC 12B · Problem 24
- 2002 AMC 10A · Problem 23
- 2001 AMC 12 · Problem 24
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