1. (8.10B) Which of the following
transformations
congruence?
preserve
I.
II.
III.
IV.
A reflection across the y-axis
A dilation by a scale factor of 3
A translation 4 units up
A rotation of 180° clockwise
A. II only
B. III only
C. I, III, IV
D. I, II, III, IV
*****