Silent Studio Directory - 292 - Triangle-Fine Arts Pictures Co. - 1915-1919 - trade name for films released through Triangle produced by Fines Arts Pictures Co. [see Fine Arts Pictures Co.] Triangle-Ince - 1915-1918 - trade name for films released through Triangle produced by Thomas Ince. Triangle-Keystone Films - US - 1915-1919 – trade name for films released through Triangle produced by Mack Sennett.