行,使E在点F的右侧,其它条件不变BD平分EF还成立吗?请说明理由.

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查看11 | 回复3 | 2010-5-18 18:33:51 | 显示全部楼层 |阅读模式
A.E.F.C在一条直线上,AE=CF,过E作ED⊥AC于E,过F作FB⊥AC于F,且DE,BF在直线AC的两侧,连接BD交AC于G,若AB=CD,则BD平分EF,问若将△DEC的边沿AC方向平行,使E在点F的右侧,其它条件不变BD平分EF还成立吗?请说明理由.
要图!!!!!!!!

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千问 | 2010-5-18 18:33:51 | 显示全部楼层
Jordan Fire Red SpizikeJust giving a quick update that the Jordan Spiz’ike Fire Red is available now at Footlocker.com and at footlocker stores. I suggest you go pick up a pair pronto.Via FootLocker Blog:The Jordan Spiz’ike combines AJ III-VI and AJ XX making it the most popular Jordan Hybrid. The dark elephant pr
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千问 | 2010-5-18 18:33:51 | 显示全部楼层
New Balance BB790 Retro,men gucci slipon shoesI have no shame saying that I am a sucker a nice Laker colorway. Say what you want about MY team, but they always bring the pain.
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