2. The essence of axial symmetry: the corresponding point is equidistant from the axial symmetry.
3. Axisymmetric features: fold in half along the axis of symmetry, with corresponding points overlapping, corresponding line segments overlapping and corresponding angles overlapping.
4. The meaning of rotation: the object moves around a certain point, and this movement angle rotates.
5. The essence of graphic rotation: when the graphic rotates, the corresponding point and the corresponding line segment rotate by the same degree, the distance from the corresponding point to the rotating point is equal, and the corresponding angle is equal.
6. Features of graphic rotation: After graphic rotation, the shape and size have not changed, but the position has changed.
Appreciate design
1. Basic method of pattern design: Simple and beautiful patterns can be designed by translation, rotation or symmetry.
The 23 steps of pattern design by translation method: (1) Select the basic pattern; (2) Determine the translation direction; (3) determining the translation distance; (4) Draw a translation map.
3. The steps of pattern design by rotating method: (1) Select the basic pattern; (2) determining the rotation point; (3) determining the rotation angle; (4)- Draw the rotated figures in turn.
4. The steps of designing patterns by using symmetry method: (1) Select basic patterns; (2) determining the symmetry axis; (3) Draw a symmetrical figure of the basic pattern.