一、填空题（每空4分，共24分）：二．如图1，如果A＋D＝180°，那么B与C的关系是2．如图2，已知3．如图3，已知4．如图4，已知二、判断题（正确的在括号内画“”，不正确的在括号内画“×”．每小题4分．共20分）：1．两条直线被第三条直线所截，同位角相等．2、两条直线被第 First, fill in the blanks (4 points per empty, a total of 24 points): II. As shown in Figure 1, if A + D = 180 °, then the relationship between B and C is 2. As shown in Figure 2, known 3. As shown in Figure 3, 4. As shown in Figure 4, known two, determine the question (correctly draw “” in parentheses, incorrectly draw “x” in parentheses. Each question 4 points. A total of 20 points): 1. The two straight lines are truncated by the third straight line, and the same is true. 2, two straight lines were first