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Mathematics 8 Online
OpenStudy (anonymous):

Which is a correct two-column proof? Given: Prove: ∠ c and ∠ d are supplementary. (1 point) Statements Reasons 1. 1. given 2. a e, fd 2. vertical angles 3. e f 3. alternate interior angles 4. a d 4. Transitive Property 5. a and c are supplementary. 5. definition of supplementary angles 6. d and c are supplementary. 6. substitution Statements Reasons 1. 1. given 2. a e 2. vertical angles 3. e f 3. alternate exterior angles 4. a d 4. Transitive Property 5. d and c are supplementary. 5

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