The Triangle - watch online: streaming, buy or rent
Currently you are able to watch "The Triangle" streaming on fuboTV, Peacock Premium, Philo, Peacock Premium Plus or for free with ads on The Roku Channel, Fandango at Home Free, Pluto TV, Tubi TV. It is also possible to buy "The Triangle" as download on Fandango At Home, Amazon Video, Apple TV Store.
Besides streaming, you can also buy the series on DVD from Amazon DVD / Blu-ray and watch it anytime.
You can also stream the title for free on The CW, Hoopla.
