Question

1. classify the triangle based on the angles. right triangle obtuse triangle acute triangle equilateral triangle

Explanation:

Step1: Recall angle - based triangle types

A right - triangle has one 90° angle, an obtuse - triangle has one angle greater than 90°, an acute - triangle has all angles less than 90°, and an equilateral triangle has all angles equal to 60°.

Step2: Observe the given triangle

The given triangle has all angles that appear to be less than 90°.

Answer:

C. acute triangle