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歡迎您訪問數學考題練習:如圖所示,在梯形ABCD中,BC∥AD,AB=!

數學考題練習:如圖所示,在梯形ABCD中,BC∥AD,AB=

更新時間:2024-01-12 16:37:25作者:貝語網校

如圖所示,在梯形ABCD中,BC∥AD,AB=DC,點M是AD的中點.

求證:BM=CM.

試題答案

證明:∵等腰梯形ABCD,BC∥AD,AB=CD,

∴∠A=∠D,

∵點M是AD中點,

∴AM=DM,

在△BAM和△CDM中

∴△BAM≌△CDM,

∴BM=CM.

試題解析

根據等腰梯形的性質得出∠A=∠D,根據SAS證出△BAM≌△CDM即可.

點評:本題考查了等腰梯形的性質和全等三角形的性質和判定的應用,關鍵是求出△BAM≌△CDM,題目比較典型,難度不大.

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