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anonymous

  • one year ago

If a quadrilateral is a parallelogram, then __________. (I do not believe B makes sense, because I always thought opposite sides were congruent) A. its opposite angles are supplementary B. its consecutive sides are congruent C. its consecutive angles are congruent D. its consecutive angles are supplementary

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  1. jim_thompson5910
    • one year ago
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    `I always thought opposite sides were congruent` you are correct

  2. anonymous
    • one year ago
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    Does that apply to angles too or just sides?

  3. jim_thompson5910
    • one year ago
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    Parallelogram ABCD |dw:1438746905152:dw|

  4. jim_thompson5910
    • one year ago
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    Properties: opposite sides are congruent: AB = CD, AD = BC opposite angles are congruent: A = C, B = D |dw:1438746982052:dw|

  5. jim_thompson5910
    • one year ago
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    adjacent angles (aka consecutive angles) are supplementary A + B = 180 B + C = 180 C + D = 180 D + A = 180

  6. jim_thompson5910
    • one year ago
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    more properties are listed here https://en.wikipedia.org/wiki/Parallelogram

  7. anonymous
    • one year ago
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    At first I said that C was the answer, "its consecutive angles are congruent" but that was wrong

  8. jim_thompson5910
    • one year ago
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    example of a particular parallelogram |dw:1438747395131:dw|

  9. jim_thompson5910
    • one year ago
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    |dw:1438747418593:dw|

  10. anonymous
    • one year ago
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    120+60 = 180. Consecutive angles are supplementary ?

  11. jim_thompson5910
    • one year ago
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    correct

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