9-10高二下·河南焦作·期末
1 . 已知,如图,在梯形ABCD中,AD∥BC,AD=3,BC=7,点M,N分别是对角线BD,AC的中点,则MN=
![](https://img.xkw.com/dksih/QBM/2014/11/10/1571892604821504/1571892610424832/STEM/efd44bfec3544256b3ebb2de320a755f.png)
![](https://img.xkw.com/dksih/QBM/2014/11/10/1571892604821504/1571892610424832/STEM/efd44bfec3544256b3ebb2de320a755f.png)
A.2 | B.5 | C.![]() | D.![]() |
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9-10高二下·河南焦作·期末
2 . 如图,在△ABC中,AB=3,AC=4,BC=5,AD平分∠BAC,则BD的值为
![](https://img.xkw.com/dksih/QBM/2012/6/12/1570883349635072/1570883354894336/STEM/915ae46cb88b4b9697ae53a813f066af.png)
![](https://img.xkw.com/dksih/QBM/2012/6/12/1570883349635072/1570883354894336/STEM/915ae46cb88b4b9697ae53a813f066af.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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