Well, the Bermuda Triangle or "Devils Triangle" as some call it, is a region where it is said that air crafts and ships mysteriously disappear. But thats mainly just a rumor since its mainly used a a route for imports and exports from the Americas to Europe.
Where exactly is it located? Mainly located in the Atlantic Ocean, close to the Gulf of Mexico and the Caribbean Sea. One point is on the island of Bermuda. The second point being Puerto Rico. And the third point being the bottom of Florida. Therefore giving it the triangle shape.
Hope this gives you a better understanding.