20 points !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!.
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Answer:
c = 20°
d = 22.5°
Step-by-step explanation:
c) 40 + 3c + 4c = 180
7c = 180 - 40
7c = 140
c = 20
d + 4d + 3d = 180
8d = 180
d = 22.5