Question

which angle is an acute angle?\
$\angle cod$\
$\angle doe$\
$\angle aod$\
$\angle coe$

Explanation:

Step1: Define acute angle

An acute angle is $0^\circ < \theta < 90^\circ$.

Step2: Analyze ∠COD

$\angle COD$ is between ray OC (not on OD/OB) and ray OD, so it is less than $90^\circ$.

Step3: Analyze other options

• $\angle DOE$: $90^\circ$ (right angle, since OD⊥OE)
• $\angle AOD$: $180^\circ - \angle COD > 90^\circ$ (obtuse)
• $\angle COE$: $90^\circ + \angle COD > 90^\circ$ (obtuse)

Answer:

∠COD