Rotational transformation:
(1), from one graphic to another, in the process of change, all points on the original graphic move in the same direction and angle around a fixed point. This graphic change is called graphic rotation transformation, which is referred to as rotation for short. This fixed point is called the center of rotation.
② Rotation transformation does not change the shape and size of the graph.
③ The distances between the corresponding points and the rotation center are equal. The angle formed by the connecting line between the corresponding point and the rotation center is equal to the rotation angle.
Translation transformation:
(1), from one graphic to another, in the process of change, all points on the original graphic move in the same direction and the same distance. This graphic change is called graphic translation transformation, which is called translation for short.
② Translation transformation does not change the shape, size and direction of graphics.
③ The line segments connecting the corresponding points are parallel (or on the same straight line) and equal.