Question

which classification is correct for ∠2?
right
obtuse
straight
acute

Explanation:

Step1: Recall angle - type definitions

An acute angle is less than 90°. A right angle is exactly 90° (marked with a square symbol). An obtuse angle is greater than 90° but less than 180°. A straight angle is 180°.

Step2: Observe the angle ∠2

The angle ∠2 has a square - corner symbol at point B, which indicates it is a 90° angle.

Answer:

right