Mathematics, 11.06.2020 01:57 kat9940
Given: AD ? BC and AD ? BC Prove: ABCD is a parallelogram. Statements Reasons 1. AD ? BC; AD ? BC 1. given 2. ?CAD and ?ACB are alternate interior ?s 2. definition of alternate interior angles 3. ?CAD ? ?ACB 3. alternate interior angles are congruent 4. AC ? AC 4. reflexive property 5. ?CAD ? ?ACB 5. SAS congruency theorem 6. AB ? CD 6. ? 7. ABCD is a parallelogram 7. parallelogram side theorem What is the missing reason in step 6? SSS congruency theorem CPCTC definition of a parallelogram opposite sides in a parallelogram are congruent
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Given: AD ? BC and AD ? BC Prove: ABCD is a parallelogram. Statements Reasons 1. AD ? BC; AD ? BC 1....
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