Learning is very tiring, but you can experience the sweet taste from it. You can exercise your thinking when you do eighth grade math exercises. The following is the reference answer to the first volume of eighth grade mathematics compiled by Zhejiang Education Publishing House. I hope you like it.

Zhejiang education printing plate eighth grade first volume mathematics book reference answer (1) page 27.

1, solution: exercise:

(1) is taken as the ray AD, and the line segment AC=b is intercepted on the AD;

(2) Draw an arc with A as the center and C as the radius;

(3) Draw an arc with C as the center and A as the radius, and the two arcs intersect at point B;

(4) Connecting AB, CB and △ABC is what you want.

As shown in figure 1-5-35.

2. Fill in:

Known; De; Known; AC；

Known; EF； Selective SelectiveServiceSystem

Zhejiang education printing plate eighth grade first volume mathematics book reference answer (2) page 30.

Zhejiang Education Publishing House Grade 8 Mathematics Volume 1 Reference Answer (3)