Question

Triangle XYZ
has a side that is 8 units long. The triangle is reflected across the y
-axis. Does the reflected figure have a side 8 units long? How do you know?(1 point)
Responses

No, a reflected figure could be any size.
No, a reflected figure could be any size.

Yes, reflection preserves the orientation of the figure.
Yes, reflection preserves the orientation of the figure.

Yes, reflection preserves the size of the figure.
Yes, reflection preserves the size of the figure.

No, a reflected figure will be smaller than the original figure.

Answer 1

Yes — reflection preserves size. A reflection is an isometry, so distances and lengths are unchanged; the reflected triangle is congruent, so the corresponding side is still 8 units.