以下是关于【平行和相交】的公开课/优质课视频，一共35个
35:5694-
35:4987 -
23:16101 -
17:16133 -
17:0457 -
18:26118 -
22:11131 -
06:1610 -
45:2375 -
45:236 -
35:58133 -
45:4138 -
16:0986 -
24:5123 -
45:15108 -
53:5646 -
05:4474 -
35:5745 -
44:4856 -
44:4958 -
18:2487 -
19:42127 -
17:46138 -
14:4928 -
42:2220 -
45:5373 -
45:3249 -
35:5439 -
42:3543 -
47:2475 -
53:30110 -
36:0837 -
32:18122 -
39:2327 -
45:1454