Question

What is the order of rotation and angle of rotation for an equilateral triangle?

Answer 1

you need to find the order of rotational symmetry of an equilateral triangle. The order of rotational symmetry of an equilateral triangle is 3 as the shape fits onto itself 3 times in a full turn.

Answer 2

The order of rotation would be 3 and the angle of rotation would be 120 degrees

Order of rotation of a figure is the number of the exact replicas of the figure we would get if we rotate the figure over a course of 360 degrees.

Angle of rotation is the minimum angle we must rotate a figure to get an exact  replica of the figure.

An equilateral triangle has an order of rotation of 3 and an angle of rotation as 120 degrees