Angle chasing — AMC & AIME Problems
Practice every real AMC 8, AMC 10, AMC 12, and AIME problem that uses angle chasing — a geometry concept — each with a professionally curated solution, many with a video solution too, from LIVE by Po-Shen Loh. Browse all concepts or the full past-contest archive.
All of these problems are used with official legal permission of the Mathematical Association of America (MAA).
AMC 8
1988 AMC 8 Problem 5 · 1994 AMC 8 Problem 7 · 1995 AMC 8 Problem 13 · 1996 AMC 8 Problem 24 · 1997 AMC 8 Problem 12 · 1999 AMC 8 Problem 21 · 2000 AMC 8 Problem 13 · 2000 AMC 8 Problem 24 · 2014 AMC 8 Problem 9 · 2014 AMC 8 Problem 15 · 2016 AMC 8 Problem 23
AMC 10
2006 AMC 10B Problem 19 · 2007 AMC 10A Problem 8 · 2007 AMC 10B Problem 4 · 2008 AMC 10B Problem 24 · 2009 AMC 10B Problem 9 · 2010 AMC 10A Problem 14 · 2010 AMC 10B Problem 6 · 2011 AMC 10B Problem 17 · 2012 AMC 10A Problem 4 · 2014 AMC 10A Problem 22 · 2019 AMC 10A Problem 13 · 2019 AMC 10B Problem 16 · 2021 AMC 10A Fall Problem 7 · 2022 AMC 10B Problem 20 · 2023 AMC 10B Problem 7 · 2025 AMC 10A Problem 6 · 2025 AMC 10A Problem 23
AMC 12
2001 AMC 12 Problem 24 · 2007 AMC 12A Problem 6 · 2008 AMC 12B Problem 15 · 2010 AMC 12A Problem 8 · 2011 AMC 12B Problem 6 · 2013 AMC 12B Problem 13 · 2014 AMC 12B Problem 21 · 2018 AMC 12A Problem 23 · 2019 AMC 12A Problem 25 · 2021 AMC 12A Fall Problem 6
AIME
2001 AIME I Problem 4 · 2001 AIME II Problem 13 · 2015 AIME I Problem 6 · 2015 AIME II Problem 11 · 2016 AIME I Problem 6 · 2016 AIME I Problem 15 · 2016 AIME II Problem 10 · 2018 AIME II Problem 14 · 2020 AIME I Problem 1 · 2021 AIME II Problem 14 · 2023 AIME II Problem 3 · 2025 AIME II Problem 5