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msumner

  • one year ago

All pairs of vertical angles are equal. True False

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  1. e.cociuba
    • one year ago
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    true

  2. msumner
    • one year ago
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    thanks

  3. e.cociuba
    • one year ago
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    yupp

  4. soty2013
    • one year ago
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    @e.cociuba True but how ?

  5. e.cociuba
    • one year ago
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    cause its the properties of a verticle angles:)

  6. e.cociuba
    • one year ago
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    Thxs for the medal:)

  7. jim_thompson5910
    • one year ago
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    |dw:1359687246158:dw| x and y are a linear pair, so they are supplementary so x+y = 180 y and z are a linear pair, so they are supplementary so y+z = 180 or z+y = 180 we now have x+y = 180 z+y = 180 Both equal 180, so by substitution, we can say x+y = z+y and if we subtract y from both sides using the subtraction property of equality, we get x = z which proves that vertical angles x and z are congruent

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