新直角三角形法在图解空间角度问题中的应用

Research on Space Angles by Graphic Method

在利用直角三角形法图解一般位置直线与投影面夹角方法的研究中,揭示了图解一般位置直线与投影面的垂直面夹角的规律,并由此给出了新直角三角形法,运用此法图解空间任意位置直线与平面、平面与平面角度问题时,可使过程简便、结果准确。

During the research of the method illustrating the angle between oblique lines and projection planes by right-triangle method, this paper discloses the law illustrating the angle between oblique lines and perpendicular planes, and on the basis of which it brings forward the synthetic method, a simple method illustrating the angle between optional position line in space and the plane, and the angle between planes.