AKS: 4MA.E.8 identify and draw geometric objects, classify polygons based on properties, and solve problems involving area and perimeter of rectangular figures (4.GSR.8)

• 8.a explore, investigate, and draw points, lines, line segments, rays, angles (right, acute, obtuse), perpendicular lines, parallel lines, and lines of symmetry; identify these in two-dimensional figures (4.GSR.8.1)

• 8.b classify, compare, and contrast polygons (e.g., triangles, quadrilaterals including kites, trapezoids, rectangles, squares, rhombuses, other parallelograms, pentagons) based on lines of symmetry, the presence or absence of parallel or perpendicular line segments, or the presence or absence of angles of a specified size and based on side lengths (4.GSR.8.2)

• 8.c solve problems involving area and perimeter of composite rectangles involving whole numbers with known side lengths (4.GSR.8.3