Final answer:
The combinations of transformations that map a rectangle onto itself are rotation, translation, reflection, and dilation.
Step-by-step explanation:
In order for a combination of transformations to map a rectangle onto itself, the transformations must preserve the shape and size of the rectangle. The correct combinations of transformations are:
- Rotation: A rotation of 90, 180, or 270 degrees around the center of the rectangle.
- Translation: A translation along the x-axis, y-axis, or both.
- Reflection: A reflection over a line of symmetry of the rectangle.
- Dilation: A dilation with a scale factor of 1.