已知长方形ABCD中,AD=6cm,AB=4cm,点E为AD的中点,若点P在线段AB上以1cm/s的速度由点A向点B运动,同时,点Q在线段BC上由点B向点C运动.1、若点Q的运动速度与点P的运动速度相等,经过1秒后,三角形AEP与三
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/06 16:20:05
![已知长方形ABCD中,AD=6cm,AB=4cm,点E为AD的中点,若点P在线段AB上以1cm/s的速度由点A向点B运动,同时,点Q在线段BC上由点B向点C运动.1、若点Q的运动速度与点P的运动速度相等,经过1秒后,三角形AEP与三](/uploads/image/z/12577635-27-5.jpg?t=%E5%B7%B2%E7%9F%A5%E9%95%BF%E6%96%B9%E5%BD%A2ABCD%E4%B8%AD%2CAD%3D6cm%2CAB%3D4cm%2C%E7%82%B9E%E4%B8%BAAD%E7%9A%84%E4%B8%AD%E7%82%B9%2C%E8%8B%A5%E7%82%B9P%E5%9C%A8%E7%BA%BF%E6%AE%B5AB%E4%B8%8A%E4%BB%A51cm%2Fs%E7%9A%84%E9%80%9F%E5%BA%A6%E7%94%B1%E7%82%B9A%E5%90%91%E7%82%B9B%E8%BF%90%E5%8A%A8%2C%E5%90%8C%E6%97%B6%2C%E7%82%B9Q%E5%9C%A8%E7%BA%BF%E6%AE%B5BC%E4%B8%8A%E7%94%B1%E7%82%B9B%E5%90%91%E7%82%B9C%E8%BF%90%E5%8A%A8.1%E3%80%81%E8%8B%A5%E7%82%B9Q%E7%9A%84%E8%BF%90%E5%8A%A8%E9%80%9F%E5%BA%A6%E4%B8%8E%E7%82%B9P%E7%9A%84%E8%BF%90%E5%8A%A8%E9%80%9F%E5%BA%A6%E7%9B%B8%E7%AD%89%2C%E7%BB%8F%E8%BF%871%E7%A7%92%E5%90%8E%2C%E4%B8%89%E8%A7%92%E5%BD%A2AEP%E4%B8%8E%E4%B8%89)
已知长方形ABCD中,AD=6cm,AB=4cm,点E为AD的中点,若点P在线段AB上以1cm/s的速度由点A向点B运动,同时,点Q在线段BC上由点B向点C运动.1、若点Q的运动速度与点P的运动速度相等,经过1秒后,三角形AEP与三
已知长方形ABCD中,AD=6cm,AB=4cm,点E为AD的中点,若点P在线段AB上以1cm/s的速度由点A向点B运动,同时,点Q在线段BC上由点B向点C运动.
1、若点Q的运动速度与点P的运动速度相等,经过1秒后,三角形AEP与三角形BPQ是否全等,请说明理由,并判断此时线段PE与线段PQ的位置关系.
2、若点Q的运动速度与点P的运动速度相等,运动时间为t 秒,设三角形PEQ的面积为
Scm²,请用t的代数式表示S
3、若点Q的运动速度与点P的运动速度不相等,当点Q的运动速度为多少时,能够使三角形AEP与三角形BPQ全等
已知长方形ABCD中,AD=6cm,AB=4cm,点E为AD的中点,若点P在线段AB上以1cm/s的速度由点A向点B运动,同时,点Q在线段BC上由点B向点C运动.1、若点Q的运动速度与点P的运动速度相等,经过1秒后,三角形AEP与三
1、三角形AEP与三角形BPQ全等,原因:三角形AEP与三角形BPQ是直角三角形,且AP=BQ=1cm,AE=BP=3cm,所以全等.线段PE和线段PQ是垂直关系.
2、S=t*t/2-3*t/2+6.用直角梯形AEQB的面积减去直角三角形AEP的面积和直角三角形BPQ的面积
3、由1已知点Q速度为1cm/s时满足条件,这种情况是AP=BQ,AE=BP;换另外一种情况则是使AP=BP,AE=BQ,设点Q的速度为v,可列方程t=4-t和vt=3,解得t-2s,v=1.5cm/s.
1.三角形AEP与三角形全等。AE=3cm,AP=1cm,BP=3CM,BQ=1CM,三角形AEP与三角形BPQ是直角三角形,所以三角形AEP与三角形BPQ全等。此时PE垂直于PQ.
2.S=(9+t平方)/2
3.由1已知点Q速度为1cm/s时满足条件,这种情况是AP=BQ,AE=BP;换另外一种情况则是使AP=BP,AE=BQ,设点Q的速度为v,可列方程t=4-t和vt=3,解...
全部展开
1.三角形AEP与三角形全等。AE=3cm,AP=1cm,BP=3CM,BQ=1CM,三角形AEP与三角形BPQ是直角三角形,所以三角形AEP与三角形BPQ全等。此时PE垂直于PQ.
2.S=(9+t平方)/2
3.由1已知点Q速度为1cm/s时满足条件,这种情况是AP=BQ,AE=BP;换另外一种情况则是使AP=BP,AE=BQ,设点Q的速度为v,可列方程t=4-t和vt=3,解得t-2s,v=1.5cm/s。
收起
after the car hit a pedestrian escape ,mercurial vapor, followed with four cars collided , causing two deaths and two injuries, Mercedes-Benz car hit the tree burned down , the Li Shilan surrendered (...
全部展开
after the car hit a pedestrian escape ,mercurial vapor, followed with four cars collided , causing two deaths and two injuries, Mercedes-Benz car hit the tree burned down , the Li Shilan surrendered ( January 20,nike mercurial vapor, newspaper reports ) .
process for the incident , Li Shilan said at his trial fell asleep while driving , to be greeted by a large truck , the lights blink of an eye , could not find the brake . After the incident,scarpe nike mercurial, Li Shilan paid 120 million yuan compensation from the victims .
court that Li Shilan in the event of the first car to escape after the accident , and in the process of driving the escape car crash more cars , causing two deaths and two minor injuries , constituted the crime of endangering public safety . In view of its initiative to surrender after the crime , and actively damages , therefore lighter made ??the above decision.
After the verdict , Li Shilan stretch appeal .
收起