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.
The internal angles of any triangle add up to 180 degrees. Therefore, a RIGHT triangle's angle's added together equal 180 degrees. â¦ The Right Angle = 90 degrees + the other 2 angles total 90 degrees, making the total number of degrees in a Right Angle Triangle = 180 degrees.ll triangles have a total of 180 degrees,  no matter how the degrees are split b â¦ etween the angles. Remember: a  quadrilateral has 360 degrees, and a triangle, no matter what type,  is half of a quadrilateral.