The Boston Celtics have almost been perfect since Jan. 25, and that trend continued Monday night with a 111-98 win against the Dallas Mavericks. Boston finished its West Coast road trip 3-1 and won its 10th game in its last 11 tries. Isaiah Thomas led all scorers with 29 points and made clutch plays in the fourth quarter to help the C’s pull away from the pesky Mavericks. Thomas was one of six Celtics in double figures as Marcus Smart (19 points), Kelly Olynyk (15 points), Al Horford (11 points), Jae Crowder (10 points) and Gerald Green (10 points) also achieved the feat. Mavericks rookie point guard Yogi Ferrell led the way with 20 points for Dallas. The Celtics improve to 36-19 with the win, while the Mavericks fall to 22-33. Here’s how it all went down. STARTING FIVE Isaiah Thomas, Marcus Smart, Jae Crowder, Amir Johnson, Al Horford HOT START FOR THE BACKCOURT The Celtics picked up where they left off against the Utah Jazz on Saturday night, by hitting seven 3-pointers in the frame and shooting 55 percent from the field. Thomas poured in 12 points thanks to three treys, and Smart had 11 of his own on 4-for-5 shooting from the floor. MISMATCH Despite the Celtics’ hot shooting, they only took a two-point lead into the second quarter thanks in large part to Dirk Nowitzki and Ferrell. The C’s decided to switch pick-and-rolls in the first quarter, and Dallas took advantage of it by getting Thomas to switch onto Nowitzki.