Respuesta :
The element that must be preserved when multiple similarity transformations are performed on a triangle is; Angle measure.
- When we are talking about similarity transformations, what we mean is that the object can be transformed into a smaller one but the shape of the object and the angle must remain the same.
- In conclusion, when objects are transformed, their angles are usually preserved but the lengths and orientation could change.
Read more about transformations at;https://brainly.com/question/4289712