Students will use perimeter to find unknown side lengths of polygons (i.e. triangle, rectangles, pentagon) in real-world math problems. Use this worksheet for small groups, review and remediation, or tutoring. You can also assign it as independent practice, homework or as an exit ticket/slip to assess student mastery. This skills-focused worksheet begins with a mini-lesson on using perimeter to find a missing side length, followed by 5 simulated test questions (word problems). It contains ti