Answer: The answer is (C) angles A and H are congruent.
Step-by-step explanation: In the given figure, lines AE and GH are parallel. The image will be used to prove that the sum of the measures of the interior angles of CGH is 180°. We are to select the correct statement that will be included in the proof.
Since the lines AE and GH are parallel and AH is a transversal, so we have
∠A ≅ ∠H, because these are the corresponding angles.
The rest of the three statements cannot be concluded from the given information.
Hence, (C) is the correct option.