The Dexter Tigers continued their undefeated season on Friday night, posting a 55-52 Class C North semifinal victory over Fort Kent at the Cross Insurance Center in Bangor. Second-seeded Dexter (20-0) plays No. 1 Central Aroostook of Mars Hill (16-4) in Saturday’s 8:30 p.m. regional final. Fort Kent, the No. 3 seed, wound up 17-4. The Warriors dictated a fast pace with their scrappy 1-3-1 trapping zone and an aggressive offensive mindset while grabbing a 31-28 halftime lead. That might not sound that great, but the Tigers have allowed only 33 points per game all season. Fort Kent used its quickness and an attacking style to take the ball to the basket early and often.