X X COA A conjecture and the two-column proof used to prove the conjecture are shown. Given: m41 = 90 Prove: APQR is a right triangle. Q 2 Drag an expression or phrase to each box to complete the proof. Statement Reason 1. m/1 =90 Given 2. Vertical Angles Theorem 3. m/1 =m/2 Substitution Property of Equality 5. 42 is a right angle. Definition of right angle 6. A PQR is a right triangle