经过正方形ABCD-A1B1C1D1的棱BB1做一平面交面AA1D1D于EF,求证:EF//BB1
问题描述:
经过正方形ABCD-A1B1C1D1的棱BB1做一平面交面AA1D1D于EF,求证:EF//BB1
答
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经过正方形ABCD-A1B1C1D1的棱BB1做一平面交面AA1D1D于EF,求证:EF//BB1
暂无优质回答,请稍候...