Ongwae shot 6 of 13 from the floor. Majok Deng and Justin Roberson added 13 points apiece for Louisiana-Monroe (18-8, 12-3 Sun Belt Conference). The Warhawks have two win-streaks of six games in the same season for the first time since 1992-93.
Louisiana-Monroe built a 38-26 halftime lead, and stretched it to 58-41 with 8:43 to play and never trailed.
Jacob Lawson scored 16 points, and Tommy Spagnolo had a double-double with 12 points and 12 rebounds to lead Appalachian State (9-14, 6-8), which shot just 19 of 55 from the floor (34.5 percent) and has lost four of its last five games.
It was the first ever meeting between the schools.