爱上海后花园

如图,三棱柱ABC-A1B1C1的底面是边长为2的正三角形且侧棱垂直于底面,侧棱长是

1ABCA1B1C1AA1ABCBDACA1AAC=ABDA1ACC1BDA1BDA1BDA1ACC162AMA1DM1AMA1DBAB1A1B...

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