Question

question 9 of 10
which of the following are congruence transformations? check all that apply.

a. translating
b. rotating
c. shrinking
d. stretching
e. reflecting

Explanation:

Congruence transformations (also called isometries) are transformations that preserve the size and shape of a figure, meaning the image is congruent to the pre - image.

• Translating (sliding a figure) does not change the size or shape, so it is a congruence transformation.
• Rotating (turning a figure around a point) also preserves size and shape, so it is a congruence transformation.
• Shrinking changes the size of the figure, so it is not a congruence transformation.
• Stretching changes the size (and sometimes shape) of the figure, so it is not a congruence transformation.
• Reflecting (flipping a figure over a line) preserves size and shape, so it is a congruence transformation.

Answer:

A. Translating, B. Rotating, E. Reflecting