已知一个多边形的内角和是1440°。
(1)求这个多边形的边数;
(2)从这个多边形的某个顶点出发,最多可以画多少条对角线?
解:(1)10;
(2)7。
连词成句。
1. is teacher your Who art
2. is from Where he
3. Amy smart very is
4. like is What she
5. English our is teacher very funny
转辙部分的轨撑安装在基本轨()。