Given: ( m∠ a = m∠ b ), ( m∠ b = m∠ c ) Prove: ( m∠ c = m∠ a )
a. ( m∠ c < m∠ a )
b. ( m∠ c > m∠ a )
c. ( m∠ c = m∠ a )
d. ( m∠ c ≠ m∠ a )