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.
What in architecture is an ornament of three arcs set in a circle? What is the name of the half circle math tool? It is called a protractor. How many degrees are in a half circle? well, there are 360 degrees in a circle, so if you were to take half of it, the degrees in a semicircle, half of a circle, would be 180 degrees. So the answer is 180 degrees.â¦.