Question

${91}^o$ is an example of:

• A. obtuse angle
• B. acute angle
• C. right angle
• D. None of the above

Answer 1

The correct option is A obtuse angle

An angle with measure $={90}^o$ is a right angle

An angle with measure $>{90}^o$ is an obtuse angle

An angle with measure $<{90}^o$ is an acute angle

Here, ${91}^o$ is greater than ${90}^o$ but less than ${180}^o$

Hence, it is an obtuse angle.