Question

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

Explanation:

Step1: Recall triangle definitions

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

Step2: Analyze the given triangle

The given triangle has two sides marked as equal (by the tick marks). It does not have all three sides equal (no indication of the third side being equal to the other two).

Answer:

Isosceles but not equilateral