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Author:
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Year:
Volume:
Issue:
po jie xian mian jiao qiu jie de ping jing
Author(s):
ZHANG Xuesong
Pages:
39
-
40
Year:
2011
Issue:
Z1
Journal:
Friend for Senior Middle School Students
Keyword:
平面
;
直线
;
线面角
;
几何问题
;
空间直角坐标系
;
山东省
;
瓶颈
;
点评
;
成角
;
四棱锥
;
Abstract:
<正>求解线面角是立体几何问题中的一个主要题型,解决此题型的最大瓶颈在于"如何确定射影的位置",2010年山东省高考试题理科第19题在这一方面就提出了较高的要求,解题思路宜从何而起呢?本文试从几个不同的角度加以破解。
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