Question

An equilateral triangle has rotational symmetry. What is the angle of rotation?

30 degrees

60 degrees

90 degrees

120 degrees

Answer 1

360 / 3=?

Answer 2

If you rotate a shape right the way around so it is back to where you started, that is 360 degrees. For an equilateral triangle, you can rotate it three times before you get back to where you started, so each rotation must be 360/3 = 120 degrees

Answer 3

For clarification.