“American Pie Presents: Girls’ Rules” (**1/2 out of four) was a formulaic but likeable entry in this series about four girls (Madison Pettis, Lizze Broadway, Natasha Benham, and Piper Curda) in their senior year of high school who band together to try to lose their virginity before moving onto college and on with their lives. Ninth movie in a series that began in 1999 doesn’t win any points for originality but avoids much of the forced crudeness of previous entries and is given a boost by its winning cast. For “Pie” fanatics, Broadway’s character is a relative of original character Stifler and this is the only entry not to star original dad Eugene Levy.