matrix(1, 0, 0, 1, 80, 90)
matrix(1, 0, 0, 1, 10, 60)
matrix(1.2, 0, 0, 0.8, 0, 0)
matrix(1, 0.36397, -0.842288, 1, 0, 0)
matrix(0.707107, 0.707107, -0.707107, 0.707107, 0, 0)