Question

Which of the following angles cannot be constructed using set squares?

• A. $90°$
• B. $75°$
• C. $50°$
• D. $30°$

Answer 1

The correct option is C $50°$

90${}^o$ and 30${}^o$ can be directly constructed using set squares.
75${}^o$ can be constructed using 45${}^o$ and 30${}^o$ corners of set squares. 50${}^o$ angle cannot be constructed using set squares.