Thus line of reflection pass through the origin the transformation is linear and could be expressed by 2 x 2 matrix. [br]1. Reflect base vectors e1, e2.[br]2. Images e1' and e2' are columns of the matrix of linear transformation.[br]3. Check the representation by means of the image "lev" (lion).

Move with point A to get the integer representation. Compute the determinant of transformation matrix.