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Suppose a+b=c+d, and alt c. Use proof by...

Suppose a+b=c+d, and `alt c`. Use proof by contradiction to show `b gt d`.

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Knowledge Check

  • If a+i b=c+i d , then

    A
    `a^(2)+c^(2)=0`
    B
    `b^(2)+c^(2)=0`
    C
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    D
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  • Examine the figures A, B, C and D. In which one of the four options all the items A, B, C and D are correct?

    A
    B
    C
    D

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