如图,角MON是60度OC平分角MON,A为射线ON上一点,且OA长为12cm。
如图,角MON是60度OC平分角MON,A为射线ON上一点,且OA长为12cm。(1)过点A作AD垂直于OC,垂足为D,延长AD交OM与B,判断三角形OAB是什么特殊三角...
如图,角MON是60度OC平分角MON,A为射线ON上一点,且OA长为12cm。
(1)过点A作AD垂直于OC,垂足为D,延长AD交OM与B,判断三角形OAB是什么特殊三角形
(2)动点P从点O出发以6cm/s的速度沿折线OA-AD向点D运动,1秒钟后点Q从点O出发,以2cm/s的速度沿射线OM方向运动,如果当点P到达点D以后可沿着直线方向追及动点Q,那么动点P从点D出发后最少要多少秒才能与动点Q相遇? 展开
(1)过点A作AD垂直于OC,垂足为D,延长AD交OM与B,判断三角形OAB是什么特殊三角形
(2)动点P从点O出发以6cm/s的速度沿折线OA-AD向点D运动,1秒钟后点Q从点O出发,以2cm/s的速度沿射线OM方向运动,如果当点P到达点D以后可沿着直线方向追及动点Q,那么动点P从点D出发后最少要多少秒才能与动点Q相遇? 展开
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2011-03-23
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