问题
填空题
线段AB两端点坐标分别为A（-5，1），B（1，5），现将它向左平移4个单位长度，得到线段A1，B1，则A1、B1的坐标分别为A1______，B1______．
答案
-5-4=-9，
1-4=-3，
∴点A1、B1的坐标分别为A1（-9，1），B1的坐标分别为（-3，5）．
故答案为：A1（-9，1），B1（-3，5）．
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线段AB两端点坐标分别为A（-5，1），B（1，5），现将它向左平移4个单位长度，得到线段A1，B1，则A1、B1的坐标分别为A1______，B1______．
-5-4=-9，
1-4=-3，
∴点A1、B1的坐标分别为A1（-9，1），B1的坐标分别为（-3，5）．
故答案为：A1（-9，1），B1（-3，5）．
阅读下面短文，用方框内所给的适当形式填入相应的空白处，使短文意思完整。（每个词只能用一次）（本题共10小题；每小题2分，满分20分）
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