Alicia is making headbands using ribbon she would like to make to make 12headbands each one requires 15.5 inches of ribbon she estimates that she will need to buy 160 inches of ribbon is her estimate reasonable

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