Joke Collection Website - Mood Talk - What are the beautiful patterns made by the rotation and translation of various figures in mathematics in the fourth grade of primary school?

What are the beautiful patterns made by the rotation and translation of various figures in mathematics in the fourth grade of primary school?

There is a diamond shape, and a star shape can be formed by rotating 90 for 4 times with an acute angle as a point; There is an isosceles triangle, which rotates 30 times on a point (if it is drawn on a grid, it is not recommended); The circle can be rotated as many times as it wants, and it can also form beautiful patterns; Like the second method, rotate the hearts ... I can think of these immediately.