Question

The angle which we can’t make using a single Set-square is ________

(a) 45^o

(b) 60^o

(c) 30^o

(d) 75^o

This question was addressed to me by my college director while I was bunking the class.

This question is from Drawing Tools and their Uses topic in chapter Drawing Instruments, Sheet Layout & Free-Hand Sketching of Engineering Drawing

Answer 1

The correct option is (d) 75^o

The explanation is: 45^o can be drawn using 45^o Set-square, and 30^o, 60^o can be drawn using 30^o – 60^o Set-square, but to draw 75^o degrees we need both Set-squares. That is only if we keep 30^o of set-square adjacent with 45^o set-square we can get 75^o. And also multiple angles can be achieved using protractor.