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cbrusoe

Theorem: If the diagonals of a parallelogram are congruent, then each angle of the parallelogram is a right angle. Kim is writing the proof of the theorem using the properties of a parallelogram shown below. • The opposite sides of a parallelogram are parallel. • The opposite sides of a parallelogram are congruent. A parallelogram ABCD with diagonals AC and BD. She proved the theorem by showing that triangle ADC is congruent to triangle CBA using the _________ Postulate.

  • one year ago
  • one year ago

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  1. AcidRa1n
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    Let me read hmmm

    • one year ago
  2. AcidRa1n
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    Side angle side?

    • one year ago
  3. AcidRa1n
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    SAS

    • one year ago
  4. AcidRa1n
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    Is that what your looking for?

    • one year ago
  5. cbrusoe
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    i think so thank-you!

    • one year ago
  6. AcidRa1n
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    Best answer medal? :P

    • one year ago
  7. JayDS
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    yep he is right.

    • one year ago
  8. cbrusoe
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    haha! theres your medal =)

    • one year ago
  9. AcidRa1n
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    Thanks lol

    • one year ago
  10. cbrusoe
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    mhmm np haha

    • one year ago
  11. that1chick
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    I think its SSS.... • The opposite sides of a parallelogram are parallel. • The opposite sides of a parallelogram are congruent. they are both talking about sides.............

    • one year ago
  12. that1chick
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    nvr mind, I found the angle Theorem: If the diagonals of a parallelogram are congruent, then each angle of the parallelogram is a right angle. So I concure with them lol

    • one year ago
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