C. AC≅DC
Step-by-step explanation:
The HL Theorem states require that the hypotenuse and one leg of a right triangle to be congruent to the hypotenuse and one leg of the other right-triangle.In this case, the hypotenuse AB≅DC thus the leg AC should be congruent to leg CD for the two triangles to be congruent.
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HL Theorem :https://brainly.com/question/3398476
Keywords: prove, triangles, congruent, HL theorem
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