Which types of triangles have rotational symmetry?
a. scalene triangle
c. right triangle
b. equilateral triangle
d. isosceles triangle

It would be an equilateral triangle .it could also be an isosceles triangle but the rotational symmetry would have to be 2.

hope this helps you!

An isosceles triangle could have rotational symmetry if it were also an equilateral triangle. An isosceles triangle is a triangle with at least two equal sides. An equilateral triangle is a triangle with exactly three equal sides. By definition, all equilateral triangles are also isosceles triangles.

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