Question

Using 30˚ – 60˚ – 90˚ and 45˚ – 45˚ – 90˚ set squares, which of the following angle is not possible to draw?

(a) 45˚

(b) 30˚

(c) 10˚

(d) 90˚

I have been asked this question by my school principal while I was bunking the class.

My question comes 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 (c) 10˚

The explanation: Using the proper combination of both the set squares, one can draw multiple angles with a 30˚ angle minimum. If T-square and mini-drafter also used, the minimum accurate angle that we can draw is 15˚. Set squares are generally used to draw vertical and inclined lines.