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For what values of the variables must ABCD be a parallelogram

For what values of the variables must ABCD be a parallelogram-example-1
User AmitB
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1 Answer

4 votes

Answer:

12. x=12, y=14

13. y=18, x=9

14. y=39, x=21.5

15. x=7, y=1.9

Explanation:

User Xiongmin LIN
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