User contributions
- 12:05, 3 March 2019 (diff | hist) . . (-16) . . 2019 AMC 10A Problems/Problem 21 (→Solution 3 (similar triangles))
- 20:56, 1 March 2019 (diff | hist) . . (+1) . . 2019 AMC 10A Problems/Problem 21 (→Solution 3 (similar triangles))
- 20:56, 1 March 2019 (diff | hist) . . (+38) . . 2019 AMC 10A Problems/Problem 21 (→Solution 3 (similar triangles))
- 16:25, 23 February 2019 (diff | hist) . . (+1,543) . . 2019 AMC 10A Problems/Problem 21 (Added new solution.)
