Mathematics » Grade 4 » Geometry

Draw and identify lines and angles, and classify shapes by properties of their lines and angles.

• 1. Draw points, lines, line segments, rays, angles (right, acute, obtuse), and perpendicular and parallel lines. Identify these in two-dimensional figures.

  Suggested tag: cc-4m-g-1

• 2. 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.

  Suggested tag: cc-4m-g-2

• 3. Recognize a line of symmetry for a two-dimensional figure as a line across the figure such that the figure can be folded along the line into matching parts. Identify line-symmetric figures and draw lines of symmetry.

  Suggested tag: cc-4m-g-3