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anonymous

  • one year ago

ABCD is a parallelogram. If m<D increases then m<C ___. (I can't decide!) A. remains the same B. doubles C. increases D. decreases

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  1. anonymous
    • one year ago
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  2. jim_thompson5910
    • one year ago
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    Rule: adjacent angles of any parallelogram are supplementary. That means they add to 180 degrees

  3. jim_thompson5910
    • one year ago
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    So C+D = 180

  4. jim_thompson5910
    • one year ago
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    Now let's say C = 90 degrees. That would make D = 90 degrees. If D were to increase to something like D = 120, then what happens to C?

  5. anonymous
    • one year ago
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    c would decrease?

  6. jim_thompson5910
    • one year ago
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    yes C would go from C = 90 to C = 60

  7. jim_thompson5910
    • one year ago
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    before: C = 90, D = 90 .... C+D = 90+90 = 180 after: D = 120, C = 60 ... C+D = 60+120 = 180

  8. anonymous
    • one year ago
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    oooh thank you that makes more sense! I was not sure if they were supplementary at first

  9. jim_thompson5910
    • one year ago
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    no problem

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