Question

the movement of the progress bar may be uneven because questions can be worth more or less (including

which angle is an acute angle?

∠cod

∠coe

∠doe

∠aod

Explanation:

Step1: Recall the definition of an acute angle

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

Step2: Analyze $\angle COD$

From the figure, $\angle COD$ is clearly less than $90^{\circ}$.

Step3: Analyze $\angle COE$

$\angle COE$ is greater than $90^{\circ}$ (it is an obtuse angle).

Step4: Analyze $\angle DOE$

$\angle DOE = 90^{\circ}$ (right - angle).

Step5: Analyze $\angle AOD$

$\angle AOD$ is greater than $90^{\circ}$ (obtuse angle).

Answer:

$\angle COD$