四个加起来就可以了 ~

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四个加起来就可以了 ~. 旋转 180 度. 旋转 90 度. 旋转 90 度. 最后作品. 三个加起来. 旋转 90 度. 旋转 90 度. 第二站. 过点 F 作 FD∥BE 且与 AB 相交于点 D ∵DF∥BE,AB∥FE ∴ 四边形 BDFE 为平行四边形 ∴ DB=FE=8m ∵AB∥HG ∴∠B=∠HGC,∠A=∠GHC ∴△ADF≌△HGC ∴HG=AD=3m ∴AB=AD+DB=8m+3m=11m. 第三站.

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Sep 02, 2014

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四个加起来就可以了 ~

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四个加起来就可以了~
旋转180度 旋转90度旋转90度最后作品三个加起来旋转90度旋转90度
第二站 • 过点F作FD∥BE且与AB相交于点D • ∵DF∥BE,AB∥FE • ∴四边形BDFE为平行四边形 • ∴DB=FE=8m • ∵AB∥HG • ∴∠B=∠HGC,∠A=∠GHC • ∴△ADF≌△HGC • ∴HG=AD=3m • ∴AB=AD+DB=8m+3m=11m
第三站

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