Fill in the missing blanks for the following two-column proof. Given: Circle N and Prove: Statements Reasons 1. 1. Given 2. 2. All radii of a circle are congruent 3. 3. Reflexive property of congruence 4. and are right angles 4. Definition of perpendicular lines 5. 5. HL theorem 6. 6. __________ 7. 7. __________