Question

The angle that is common to the two different types of set squares is __.

• A. 180${}^{\circ }$
• B. 90${}^{\circ }$
• C. 120${}^{\circ }$
• D. 60${}^{\circ }$

Answer 1

The correct option is B

90${}^{\circ }$

The two commonly used set squares are the 30-60-90 set square and the 45-45-90 set square.
Thus, the angle that is common to both the set squares is 90${}^{\circ }$.