For the best possible bit-rate and special features (which help explain the ending), the Blu-ray release is highly recommended for fans of the genre. Why You Should Re-watch Triangle
Written and directed by Christopher Smith, the story is a masterclass in circular storytelling where every background detail eventually matters. The Lead Performance: triangle 2009 mp4moviez
You can find it on Apple TV or the Google Play Store. For the best possible bit-rate and special features