Question

classify the triangle using its angles. acute right obtuse

Explanation:

Step1: Recall triangle angle classifications

A right triangle has one \(90^\circ\) (right) angle, an acute triangle has all angles \(< 90^\circ\), and an obtuse triangle has one angle \(> 90^\circ\).

Step2: Analyze the given triangle

The triangle has a right - angle symbol (the red square) at one vertex, indicating a \(90^\circ\) angle.

Answer:

B. right (assuming the middle option is "right" as per the options: acute, right, obtuse)