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2012 AMC 10A Question 4

AMC10 · 2012 AMC 10A

Question 4

Let $\angle ABC = 24^\circ$ and $\angle ABD = 20^\circ .$ What is the smallest possible degree measure for $\angle CBD?$
  1. $0$
  2. $2$
  3. $4$
  4. $6$
  5. $12$