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歡迎您訪問數學考題練習:如圖,在等腰梯形ABCD中,AD∥BC,過C作!

數學考題練習:如圖,在等腰梯形ABCD中,AD∥BC,過C作

更新時間:2024-01-12 16:37:37作者:貝語網校

如圖,在等腰梯形ABCD中,AD∥BC,過C作CE∥AB,P為梯形ABCD內一點,連接BP并延長交CD于F,交CE于E,再連接PC,已知BP=PC,則下列結論中錯誤的是

A.∠1=∠2

B.∠2=∠E

C.△PFC∽△PCE

D.△EFC∽△ECB

試題答案

D

試題解析

此題可以利用等腰梯形的性質及相似三角形的判定等知識點,采用逐個分析法確定最后答案.

解答:∵ABCD是等腰梯形,

∴∠ABC=∠DCB,

∵BP=CP,

∴∠PBC=∠PCB,

∴∠1=∠2(A正確),

∵CE∥AB,

∴∠1=∠E,

∴∠2=∠E(B正確),

∵∠P=∠P,∠2=∠E,

∴△PFC∽△PCE(C正確).

故選D.

點評:本題主要考查了等腰梯形及平行線的性質,相似三角形的判定等內容.

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