第五章  相交线与平行线

5.1 相交线····················································································· 1

5.2 平行线及其判定····································································· 22

5.3 平行线的性质········································································· 36

5.4 平移······················································································· 46

第六章  实数

6．1 平方根················································································· 52

6．2 立方根················································································· 57

6．3 实数···················································································· 63

第七章  平面直角坐标系

7.1 平面直角坐标系····································································· 67

7.2 坐标方法的简单应用······························································ 78

第八章  二元一次方程组

8.1 二元一次方程组····································································· 86

8.2 消元——解二元一次方程组··················································· 93

8.3 实际问题与二元一次方程组················································· 105

8.4 三元一次方程组的解法························································ 111

第九章  不等式与不等式组

9.1 不等式·················································································· 115

9.2 一元一次不等式··································································· 121

9.3 一元一次不等式组································································ 127

第十章  数据的收集、整理与描述

10.1 统计调查············································································ 132

10.2 直方图················································································ 140

10.3 课题学习 从数据谈节水····················································· 144