Brigham Young (9-0) shot 56 percent from the field and connected on 9-of-17 from 3-point range.
Fredette made one of those 3-pointers and scored 28 points. Noah Hartsock had 14 points and 12 rebounds for the Cougars, who limited the Catamounts to 35 percent shooting. Brigham Young had a 38-25 lead at halftime.
Vermont (6-2) had won five in a row since suffering an 89-73 loss to Connecticut on Nov. 17. The Catamounts were led by 14 points from Brendan Bald.