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Geo Theorem 2.5 Congruent Complements

Exploration for the complement Theorem Move Point B or F to match the angle measures. How does matching the angle measures confirm the validity of the Complement Theorem - Complements of congruent angles are congruent.
What are complementary angles? How do we know the pairs of adjacent angles are complementary? Under what condition can it be said that <ADB is congruent to <FDG?