Refer the figure below. Find out one acute angle and one straight angle.
A
∠FOE and ∠AOC
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B
∠AOE and ∠EOB
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C
∠COB and ∠AOE
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D
∠COB and ∠AOB
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Solution
The correct option is D∠COB and ∠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.
∠FOE and ∠AOC are acute angle and obtuse angle respectively.
∠AOE and ∠EOB are two right angles.
∠COB and ∠AOE are acute angle and right angle respectively.
∠COB and ∠AOB are acute angle and straight angle respectively.