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如图,在四边形ABCD中,AD∥BC,且AD=12cm,点P从点A出发,以3cm/s的速度在射线AD上运动;同时,点Q从点C出发,以1cm/s的速度在射线CB上运动,运动时间为t,当t= 秒(s...
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教案备课库《平行四边形的判定作业(2)》真题及答案
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已知如图四边形ABCD中AB=3cmAD=4cmBC=13cmCD=12cm且∠A.=90°求四边形
如图四边形ABCD中已知AB=3cmAD=4cmBC=13cmCD=12cm且∠A=90°求四边形A
如图在四边形ABCD中对角线AC与BD相交于点O不能判断四边形ABCD是平行四边形的是
AB∥DC,AD=BC
AB∥DC,AD∥BC
AB=DC,AD=BC
OA=OC,OB=OD
如图在四边形ABCD中对角线AC.BD相交于点O.下列条件不能判定四边形ABCD为平行四边形的是
AB∥CD,AD∥BC
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如图已知E.F.分别是□ABCD的边BCAD上的点且BE=DF.1求证四边形AECF是平行四边形2若
如图四边形ABCD中AD∥BCAE⊥AD交BD于点E.CF⊥BC交BD于点F.且AE=CF.求证四边
四边形ABCD的对角线AC.BD相交于点O..下列条件中能判断四边形ABCD是平行四边形的是
AD=BC,AB∥CD
AO=CO,AD=BC
AD∥BC,∠ADC=∠ABC
AD=BC,∠ABD=∠CDB
如图四边形ABCD中AD∥BCAE⊥AD交BD于点E.CF⊥BC交BD于点F.且AE=CF.求证四边
探究如图①在四边形ABCD中∠BAD=∠BCD=90°AB=ADAE⊥CD于点E.若AE=10求四边
如图在四边形ABCD中对角线AC.BD相交于点O.下列条件不能判定四边形ABCD为平行四边形的是
AB∥CD,AD∥BC
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如图四边形ABCD中AB=10BC=13CD=12AD=5AD⊥CD求四边形ABCD的面积.
四边形ABCD中AD//BCAD=BC则四边形ABCD是四边形.
如图在四边形ABCD中对角线AC.BD相交于点O.下列条件不能判定四边形ABCD为平行四边形的是
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如图四边形ABCD中AD∥BCAE⊥AD交BD于点E.CF⊥BC交BD于点F.且AE=CF.求证四边
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