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已知:梯形ABCD中,AD∥BC,AB⊥BC,AD=3,AB=6,DF⊥DC分别交射线AB、射线CB于点E、F. (1)当点E为边AB的中点时(如图1),求BC的长; (2)当点E在边AB上时(...
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已知如图所示梯形ABCD中AB∥CDAD=BCAC⊥BDAB=3CD=5则梯形的面积是______.
如图在梯形ABCD中AD∥BCAB=CD∠B.=60°AD=3cmBC=7cm则梯形ABCD的周长为
在等腰梯形ABCD中AD∥BCAD=3cmAB=4cm∠B.=60°则下底BC的长为______cm
梯形ABCD中AD∥BCAD=1BC=4∠C.=70°∠B.=40°则AB的长为_______.
如图在梯形ABCD中AD∥BCAB⊥AC∠B=45°AD=1BC=4求DC的长.
如图在直角梯形ABCD中AD∥BCAB⊥BCAD=2AB=3BC=4则梯形ABCD的面积是
如图2在等腰梯形ABCD中BC∥ADAD=5DC=4DE∥AB交BC于点E.且EC=3则梯形ABCD
)、26 (
)、 25 (
)、21 (
)、20
如图所示已知直角梯形ABCD其中AB=BC=2ADAS⊥平面ABCDAD∥BCAB⊥BC且AS=AB
如图在等腰梯形ABCD中AD∥BCAB=DCAC⊥BD.若AD=4BC=6则梯形ABCD的面积是.
已知在等腰梯形ABCD中AD∥BCAB=AD=CDAC⊥AB那么=.
已知在等腰梯形ABCD中AD//BC对角线AC⊥BDAD=3cmBC=7cm则梯形的高是cm
如图4357在梯形ABCD中AD∥BCAB=DC=3AD=5∠C.=60°则下底BC的长为
8
9
10
11
在梯形ABCD中AD∥BC∠B.=70°∠C.=40°作DE∥AB交BC于点E.若AD=3BC=10
如图梯形ABCD中AD∥BCAB=CDAD=2BC=6∠B.=60°则梯形ABCD的周长是
12
14
16
18
如图已知梯形ABCD中AD∥BCCA平分∠BCDAD=12BC=22CE=101试说明AB=DE2求
已知如图在梯形ABCD中AD∥BCBC=DCCF平分∠BCDDF//ABBF的延长线交DC于点E.1
如图梯形ABCD中AD∥BC点M是AD的中点且MB=MC若AD=4AB=6BC=8则梯形ABCD的周
22
24
26
28
已知如图在梯形ABCD中DC∥ABAD=BCBD平分∠ABC∠A.=60°.求1求∠CDB的度数2当
如图直角梯形ABCD中AD∥BCAC⊥ABAD=8BC=10则梯形ABCD面积是_________.
梯形ABCD中AD∥BCAD=1BC=4∠C.=700∠B.=400则AB的长为
2
3
4
5
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