Question

Refer the figure below. Find out one acute angle and one straight angle.

• A. $\angle$FOE and $\angle$AOC
• B. $\angle$AOE and $\angle$EOB
• C. $\angle$COB and $\angle$AOE
• D. $\angle$COB and $\angle$AOB

Answer 1

The correct option is D $\angle$COB and $\angle$AOB

If the measure of an angle is less than 90°, it is called an acute angle.
If the measure of an angle is equal to 180°, it is called a straight angle.

• $\angle$FOE and $\angle$AOC are acute angle and obtuse angle respectively.
• $\angle$AOE and $\angle$EOB are two right angles.
• $\angle$COB and $\angle$AOE are acute angle and right angle respectively.
• $\angle$COB and $\angle$AOB are acute angle and straight angle respectively.

Hence $\angle$COB and $\angle$AOB is the right answer.