Written records of the history of China date from as early as 1500 BC, from the Shang dynasty (c. 1600â1046 BC). Ancient historical texts such as the Records of the Grand Historian (c. 100 BC) and the Bamboo Annals (296 BC) describe a Xia dynasty (c. 2070â1600 BC) before the Shang, but no writing on a durable medium have survived.
A square is a quadrilateral so it has 360 degrees. A square is a quadrilateral so it has 360 degrees.
One important thing to keep in mind, though: properties such as side lengths and angle measures of the objects are key. You only have to rotate a regular hexagon 60Â° for it to carry onto itself, but a square needs 90Â°. Both the concepts of symmetry and carrying a geometric shape or figure onto itself can be found in things like wallpapers, clothing, computer screensavers, and much more.