Euler revisits some calculations from E729, solves the problem for isosceles triangles, and also considers scalene triangles. There are tables that include error terms. He also notes that some triangles have two different dissections.
Original Source Citation
Mémoires de l'académie des sciences de St.-Petersbourg, Volume 1, pp. 49-87.
Opera Omnia Citation
Series 1, Volume 26, pp.304-333.