Can someone pls help me with this

triangle a c-10 b- 5 a-10

triangle b- f 5 e-5 d-5

Step-by-step explanation:

point m is on plane r

it is rigid.; it is isometric. ; the size is preserved.

step-by-step explanation:

a translation is called an isometry; these are transformations that preserve congruence between pre-images and images.

they are also called rigid transformations, as the only thing that can happen to a pre-image is that it is moved or turned, not stretched or shrunk.

since congruence is preserved, the size is preserved.