Hi I am STY. Questions are as follows:
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maths(31) - 3D figures problem
2011-12-15 5:18 am
回答 (1)
2011-12-15 5:32 am
✔ 最佳答案
Only B is incorrect.The projection of point D on the plane EFGH is K, where is a point on the line EH, and DK⊥GK.
Therefore, the angle between line DG and plane EFGH is ∠DGK.
參考: Knowledge is power.
收錄日期: 2021-04-23 18:31:30
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