Fast! how can 33 over 9 be expressed as a decimal? 2.3 with bar over 3 3.6 with bar over 6 4.3 with bar over 3 4.6 with bar over 6

1. ∠1 is complementary to ∠2 and ∠3 is complementary to ∠2. subtraction property of equality 2. m∠1 + m∠2 = 90 and m∠3 + m∠2 = 90 substitution 3. m∠1 + m∠2 = m∠3 + m∠2 definition of complementary 4. m∠1 = m∠3 given