is this angle acute, right, obtuse, or straight? acute right obtuse straight

is this angle acute, right, obtuse, or straight? acute right obtuse straight
Answer
Explanation:
Step1: Recall angle - type definitions
An acute angle is less than 90°. A right - angle is 90°. An obtuse angle is between 90° and 180°. A straight angle is 180°.
Step2: Observe the given angle
The given angle is less than 90°.
Answer:
acute