这两周我们继续学习了图形的初步知识，包括线段的和差；线段的中点；角的和

In the past two weeks, we have continued to learn the basic knowledge of graphics, including the sum and difference of line segments; the midpoint of line segments; the sum and difference of angles; complementary angles and supplementary angles; angle bisectors. Because of the first contact with geometric proofs, many students feel that the writing process is very Difficulties, this is a very normal situation, it requires us to face the difficulties, do more, practice more, and slowly learn how to write, come on!

In the past two weeks, we continued to learn the preliminary knowledge of graphics, including the sum and difference of line segments; The midpoint of the line segment; Sum and difference of angles; Residual angle and complementary angle; Angle bisector, because the first contact with geometry proves that many students find the writing process very difficult. This is a very normal situation. We are required to meet the difficulties, do more and practice more, and slowly learn how to write. Come on!

In the past two weeks, we have continued to learn the preliminary knowledge of graphics, including the sum and difference of line segments; The midpoint of the line segment; Sum and difference of angles; Complementary angle and complementary angle; Angle bisector, because of the first contact with geometric proof, many students find the writing process very difficult, which is a normal situation, so we are required to face the difficulties, do more, practice more, and learn how to write slowly, come on!