Lesley is correct about 120 degree but is 90, 360 also correct? i think 3 line of symmetry is also correct

Question

Lesley states the symmetry of an equilateral triangle is as follows:

Rotational: Degrees of 90, 120, 360

Line: 3 Lines of Symmetry

Is Lesley correct? Why or why not?

Answer 1

The number of lines of symmetry in a regular polygon is equal to the number of sides.

The angle for rotational symmetry in a regular polygon is equal to 360/ number of sides.

Thus, for an equilateral triangle, there are 3 lines of symmetry but the angle of rotation is every 120 degrees, so it would be 120, 240 and 360 degrees.