Question

1. classify the triangle by its angles. choose your answer...

Explanation:

Step1: Recall angle - based triangle classification

Triangles are classified by angles as acute (all angles \(< 90^\circ\)), right (one angle \( = 90^\circ\)), or obtuse (one angle \(> 90^\circ\)).

Step2: Analyze the given angles

The triangle has angles \(23^\circ\), \(37^\circ\), and \(120^\circ\). Since \(120^\circ>90^\circ\), the triangle has one obtuse angle.

Answer:

Obtuse triangle