Classify triangles by angle measures as acute, right, or obtuse and by side lengths as equilateral, isosceles, or scalene, and classify quadrilaterals hierarchically using properties such as parallel or perpendicular sides, congruent side lengths, and right angles, including trapezoids, parallelograms, rectangles, rhombuses, squares, and kites. Identify, measure, and draw angles from 0° to 180° with a protractor, correctly distinguishing acute, right, obtuse, and straight angles regardless of ray length or orientation. Identify lines of symmetry, parallel lines, and perpendicular lines, and plot and interpret points represented by nonnegative whole-number ordered pairs in the first quadrant of the coordinate plane.