# data = pd.DataFrame(columns=['x1','y1','x1_rotated','y1_rotated','x2','y2','x2_rotated','y2_rotated','x3','y3','x3_rotated','y3_rotated','x4','y4','x4_rotated','y4_rotated'])
# data = pd.DataFrame(columns=['x1','y1','x1_rotated','y1_rotated','x2','y2','x2_rotated','y2_rotated','x3','y3','x3_rotated','y3_rotated','x4','y4','x4_rotated','y4_rotated'])