Question

classify this triangle by its sides.
triangle image
scalene
isosceles but not equilateral
equilateral

Explanation:

Step1: Recall triangle side - classification definitions

A scalene triangle has all sides of different lengths. An isosceles triangle has at least two sides of equal length. An equilateral triangle has all three sides of equal length.

Step2: Analyze the given triangle

From the angle markings (which in a triangle, equal - angled sides are opposite equal - angled angles), we can infer that two sides are equal. Since it is not indicated that all three angles (and thus all three sides) are equal.

Answer:

isosceles but not equilateral