For activities with important visual aids. Unit: 4.7 Angles and Angle Measurement (Grade 4). 4.7 Angles and Angle Measurement Unit Goals Students learn to draw and identify points, rays, segments, angles, and lines, including parallel and perpendicular lines. Students also learn how to use a protractor to measure angles and draw angles of given measurements, and identify acute, obtuse, right, and straight angles in two-dimensional figures. Section A Goals Draw and identify points, lines, rays, segments, and parallel and intersecting lines in geometric figures. Recognize that angles are formed wherever two rays share a common endpoint and identify angles in two-dimensional figures. Sec