towlesam
towlesam
17.07.2019 • 
Mathematics

Prove: statement reason 1. given bc de 2. for parallel lines cut by a transversal, corresponding angles are congruent. 3. 4. and are supplementary. linear pair theorem 5. m = m = 90° if two congruent angles are supplementary, then each angle is a right angle. 6. definition of perpendicular lines what is the missing step in the proof?

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