Question

what kind of triangle is this?
equilateral
isosceles but not equilateral
scalene

Explanation:

Step1: Recall triangle definitions

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

Step2: Analyze side lengths

The side lengths are \(4\), \(4\), and \(6\). Since two sides (\(4\) and \(4\)) are equal and the third side (\(6\)) is different, it is not equilateral (all sides not equal) and not scalene (not all sides different).

Answer:

isosceles but not equilateral