Question

which angle is an acute angle?
∠cod
∠coe
∠aod
∠doe

Explanation:

Step1: Recall the definition of an acute angle

An acute angle is an angle that measures less than $90^{\circ}$.

Step2: Analyze each option

• For $\angle COD$: It is clearly less than $90^{\circ}$ (by visual inspection of the diagram).
• For $\angle COE$: It is greater than $90^{\circ}$ (as it spans more than a right - angle).
• For $\angle AOD$: It is greater than $90^{\circ}$ (as it is a wide - spanning angle).
• For $\angle DOE$: It is equal to $90^{\circ}+$ some measure (so greater than $90^{\circ}$).

So, $\angle COD$ is the acute angle.

Answer:

$\angle COD$