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Continue to ChatLINE ROTATION METHOD IN CAD SOFTWARE https://ktuengineeringgraphics.wordpress.com/2017/06/10/kerala-technical-university-engineering-graphics-using-cad-software/
LINE ROTATION METHOD IN CAD SOFTWARE https://ktuengineeringgraphics.wordpress.com/2017/06/10/kerala-technical-university-engineering-graphics-using-cad-software/