Using rigid motion, which statement is true about the triangles?
a. △abc is congruent to △fed
b. the triangles are not congruent.
c. △abc is congruent to △def .
d. △abc is congruent to △fde .

  d. △abc is congruent to △fde

step-by-step explanation:

triangle abc is reflected across the x-axis. the corresponding vertices are

the names of the triangles in the congruence statement must have corresponding vertices in the same order. that is, △abc is congruent to △fde.

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