例:2540=2000+500+40
2866=____+____+____+____
若过多边形的一个顶点的所有对角线把这个多边形分成8个三角形,求该多边形的边数.
下图表示神经元联系的一种形式,与此相关的表述正确的是( )
Afterwards, we received a letter, in which he offered an a____ for his rudeness at the party.