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.
Full Answer. A circle contains 360 degrees. If a person imagines himself standing in the middle of a clock and facing the 12 o'clock position and then turning to the right to face the 3 o'clock position or to the left to face the 9 o'clock position, he has made a 90-degree turn, which is one-quarter of a complete circle.