21 November 2018

• 19:5519:55, 21 November 2018 diff hist 0 m 2006 AMC 12A Problems/Problem 17 →Solution 3
• 19:3819:38, 21 November 2018 diff hist +845 2006 AMC 12A Problems/Problem 17 →Solution

14 March 2018

• 20:0820:08, 14 March 2018 diff hist +735 1979 AHSME Problems/Problem 12 →Solution
• 16:5716:57, 14 March 2018 diff hist +1,023 N 1956 AHSME Problems/Problem 49 Created page with "Solution 1 First, from triangle <math>ABO</math>, <math>\angle AOB = 180^\circ - \angle BAO - \angle ABO</math>. Note that <math>AO</math> bisects <math>\angle BAT</math> (to..."