What kind of transformation is illustrated in this figure?
translation
rotation
reflection
dilation

Answer:
The answer is rotation.
Step-by-step explanation:
The answer is rotation.
The triangle DEF has transformed to D'E'F' via rotation transformation.
A rotation is a transformation where the figure turns about a fixed point called the center of rotation. Or in simpler terms, we can say that rotation is when, we rotate a figure a certain degree around a point.