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.
A right angle has 90 degrees. The question is how many degrees does  a right triangle have? All 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.360 cut in half, or divided by two, is  180, no matter how you slice it!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.