1. The picture shows a square, which is a special type of parallelogram. 2. A square has four equal sides and four equal angles, each measuring 90°. 3. The diagonals of the square are equal in length and bisect each other, meaning they cut each other exactly in half. 4. The diagonals are perpendicular, forming right angles where they intersect, as indicated by the pink square in the center. 5. The tick marks on the sides show that all four sides are equal in length. 6. The tick marks on the diagonals show that each diagonal is divided into two equal parts by their intersection. 7. The pink right-angle marks at each corner confirm that all angles in the square are 90°. This picture visually demonstrates the defining properties of a square: equal sides, equal angles, equal and perpendicular diagonals that bisect each other.