Triangle ABC with vertices A(–3, 4), B(0, 2), and C(–2, 1) on a coordinate grid. After a translation of 4 units right and 3 units down, what will be B ’ ?

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