1. Feel the positional relationship before and after translation-parallel. (In the same plane, two lines that never intersect are called parallel lines. )

2. Draw parallel lines.

(1) Fix the triangular ruler and draw a straight line along the right angle.

(2) Hold the ruler against the other right-angled edge of the triangular ruler, fix the ruler, and then translate the triangular ruler.

(3) Draw a straight line along the right angle.

3. You can find the parallel lines in the picture with the help of objects, plane figures or three-dimensional figures.

Supplementary knowledge points: use mathematical symbols to represent the parallel relationship between two straight lines. Such as AB∑CD.

Summary: In mathematics, the translation of knowledge points and parallel tutoring are very interesting. After reading the article, I hope it will be helpful to everyone's study.