Exercise 62 Page 293

To identify the Property of Equality being demonstrated by the given equations, we should first identify the operation being performed. Ifm∠ P+m∠ Q=110 and m∠ R=110, thenm∠ P+m∠ Q=m∠ R.In this case, we are given three equations. m∠ P+m∠ Q&= 110 m∠ R&= 110 m∠ P+m∠ Q&= m ∠ R This demonstrates the Transitive Property of Equality. l a = b b = c ⇒ a = c