Question

1. classify the triangle by its angles and sides. equiangular equilateral right isosceles right scalene acute scalene

Explanation:

Step1: Analyze the angles

A right - angled triangle has one angle equal to \(90^{\circ}\). The given triangle has a right angle (as indicated by the right - angle symbol).

Step2: Analyze the sides

An isosceles triangle has two sides of equal length. The markings on the triangle show that two sides are equal.

Answer:

right isosceles