（13分）如图，已知正三棱柱 的底面正三角形的边长是2，D是 的中点，直线 与侧面 所成的角是 . ⑴
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| ， 扩展阅读：三棱柱的截面演示图 ... 三棱柱的三视图 ... 三棱柱截面图片大全 ... 已知行列式a11 a12 a13 ... 正三棱柱图片大全 ... 三棱柱的棱长指的是 ... 正三棱柱怎么画 ... 四棱柱全部图片 ... 正三棱柱建系示意图 ... 本站交流只代表网友个人观点，与本站立场无关 |
