Question

What should I do I don’t understand

Answer 1

∠MCD and ∠GCM are complementary

∠FGM and ∠MGC are complementary

∠MCD, ∠CDM and ∠DMC add up to 180°

Explanation:

Complementary angles are two angles that add up to 90°.

The angles of a triangle add up to 180°