Help with 30 please I forget what supplementary and complementary mean

Help With 30 Please I Forget What Supplementary And Complementary Mean class=

Answer :

Answer:

a. ∠AMB, ∠BMC

b. ∠BMC, ∠CMD

Step-by-step explanation:

supplementary=angles add up to 180°

Complementary=angles add up to 90°