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.
In a four sided regular polygon (square)the degree value of its internal angles are found by. 1  Dividing 360 by 4 = 90(This gives the values of the 4 angles at the center of the square) 2  Subtract 90 from 180 to get the value of the internal angles.