Question

Which of the following measures of angles are obtuse?

• A. 140${}^{\circ }$
• B. 40${}^{\circ }$
• C. 170${}^{\circ }$
• D. 290${}^{\circ }$

Answer 1

Answer: (A), (C)

The correct options are
A 140${}^{\circ }$
C 170${}^{\circ }$

If the measure of an angle is more than 90${}^{\circ }$ and less than 180${}^{\circ }$, then such an angle is called an obtuse angle.
From the given option, only 140° and 170° is more than 90° and less than 180°