Draw and identify lines and angles, and classify shapes by properties of their lines and angles.
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Draw points, lines, line segments, rays, angles (right, acute, obtuse), and perpendicular and parallel lines. Identify these in two-dimensional figures.
Identify line-symmetric figures. Recognize and draw lines of symmetry for two-dimensional figures.
Classify two-dimensional figures based on the presence or absence of parallel or perpendicular lines, or the presence or absence of angles of a specified size. Recognize right triangles as a category, and identify right triangles.
Draw and identify lines and angles and classify shapes by properties of their lines and angles.