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)