4th Grade Math Geometry Worksheets & Printables - TeacherVision VIEW FOURTH GRADE MATH TOPICS Acute and Obtuse Angles I Use this geometry worksheet to explain the difference between acute, obtuse, and right angles. Give students practice identifying each type of angle. Acute and Obtuse Angles II Give students a protractor to measure the acute and obtuse angles in this worksheet. Area of Rectangles and Squares I