12 Dec
2016
12 Dec
'16
5:14 p.m.
Correction to: ----- I've seen similar questions for polygons where the dissection sought is one into acute triangles. E.g., the minimal number of these for a square is 7. ----- Wrong. The correct minimum number is 8 (Lindgren, "Geometric Dissections", 1964). If you haven't seen this, it's a nice challenge to find one with 8. Sorry about that. —Dan