打开App
360P
含30°角的直角三角形的性质 初中数学八年级上册
如图，在△ABC中，∠C=90°，∠B＝15°，AB的垂直平分线交BC于点D，交AB于点E，DB=12cm，则AC=_________.
八年级上册 全等三角形 整式 分式 初中数学31/74
App04:05
App03:43
App05:48
App02:33
App05:07
App05:35
App03:59
App04:18
App10:23
App06:24
App05:41
App06:33
App05:16
App07:23
App14:57
App07:50
App11:18
App07:45
App02:33
App06:45
App07:56
App14:04
App06:26
App14:29
App14:41
App14:50
App15:46
App07:35
App09:42
App01:34
App02:14打开App观看
