题目内容

(本小题满分7分)如图(6),在等腰梯形中,

的中点,连接.。求证:.

 

证明:∵四边形是等腰梯形 ∴········································ (2分)

的中点

····················································································· (2分)

.········································································ (2分)

.·················································································· (1分)

解析:略

 

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