一、填空题（每空3分，共42分）：1．如图1．若．则ABCD．2．如图2。直线AB、CD相交手点O．OE平分若．则3．如图人在和中，为同位角的是为内错角的是，为同分内角的是4．如图4，若AB／／DC，BC／／ED．则5．如图5，直线AB、CD、EF相交于一点O，则6命题“同位角相等”的题设是结 First, fill in the blanks (3 points per empty, a total of 42 points): 1. Figure 1. If. ABCD. 2. As shown in Figure 2. Lines AB, CD intersect hand point O. OE if divided equally. Then 3. If the figure is in the middle and the middle, the angle of the inner angle is the inner angle, and the inner angle of the inner angle is 4. As shown in Figure 4, if AB//DC, BC//ED. Then 5. As shown in Figure 5, the lines AB, CD, and EF intersect at a point O, then the 6 proposition “equal angle equal” is set