Question

Which of the following angle can be constructed using a ruler and compass?

• A. ${35}^{\circ }$
• B. ${40}^{\circ }$
• C. ${90}^{\circ }$
• D. ${50}^{\circ }$

Answer 1

The correct option is C ${90}^{\circ }$

Every angle which is the multiple of 15 can be constructed by using a ruler and compass.
Here 90 is the multiple of 15, so ${90}^{\circ }$ can be constructed by using a ruler and compass.