वह अनुभागीय दृश्य रेखाचित्र (Sectional view drawing) जिसमें किसी वस्तु का एक चौथाई भाग हटाने के लिए चिह्नित किया गया हो, क्या कहलाता है?

Which of the following instruments is commonly used to draw precise circles and arcs in engineering drawing?

A point on the picture plane where all the parallel lines appear to converge is called:

A point on the picture plane where all parallel lines appear to converge in perspective drawing is called: