What are the three forms of change in graphics

The forms of change in a figure are translation, rotation, and folding.

1, translation refers to the same plane, all the points on a figure are in accordance with a certain straight line direction to do the same distance of movement, such graphic motion is called the graph of the translation movement, or translation. Translation does not change the shape or size of the figure. When a figure is translated, the corresponding line segments are equal, the corresponding angles are equal, and the line segments connecting the corresponding points are equal.

It is isometric isomorphism, a type of affine transformation in affine space. It can be thought of as the result of adding the same vector to each point, or moving the center of a coordinate system. That is, if a known vector that is a point in space, translates. The direction of the translation of the picture is not limited to be horizontal.

2, in the plane, turn a figure around a point in a certain direction by an angle, such a movement is called the rotation of the figure. This fixed point is called the center of rotation and the angle of rotation is called the angle of rotation. The rotation of a figure is the position of each point on the figure in the plane around a fixed point rotated by a fixed angle of movement, in which the corresponding point to the center of rotation of the same distance, the length of the corresponding line segment, the corresponding angle of equal size, the rotation does not change the shape and size of the figure.

3, folded is a figure along a straight line folded over, the line on both sides of the part can be overlapped, the figure is called axisymmetric figure, the line is its axis of symmetry.