Question

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

Explanation:

Step1: Recall triangle - side classification rules

An equilateral triangle has 3 equal sides. A scalene triangle has 3 unequal sides. An isosceles triangle has at least 2 equal sides.

Step2: Observe the given triangle

The triangle has two equal - length sides (the two sides that form the non - base angles which are marked as equal, indicating equal sides opposite to them). And it is not equilateral as all three sides are not equal.

Answer:

isosceles but not equilateral