Discussion on the Relation between Space Plane Angles and its Projection
WANG Xu-ming
XING Hua-lu
Abstract：The angle between the two lines in space is often encountered in engineering practice.The diagram of random plane angle is not given in the engineering drawing teaching.In this paper , under the premise of a certain projection angle , it is analyzed detailedly change regulation between space plane angle and its projec -tion by application of three rays theorem.The purpose is to strengthen the teaching of engineering drawing and deepen the application of plane angle in engineering.
Keywords：plane anglethree rays theoremprojection angle
Publication Date：2014-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 45-48 )