Answer:
The answer is 3.
Step-by-step explanation:
We can say that a shape has reflective symmetry, when that shape is reflected in a line of symmetry or a mirror line. The reflected shape will be exactly the same as the original shape.
So, an equilateral triangle has three lines of symmetry. An equilateral triangle has 3 equal sides, so it has 3 lines of reflective symmetry.
