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90 degrees and 180 degrees

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โˆ™ 2010-06-15 02:28:59
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In logical mathematics there are two examples I present first Roses are flowerssecond Red roses are flowers what do you cll the first and second statement

If a conditional statement is true then its contrapositive

Is a theorem a statement that can be easily proved using a corollary

To begin an indirect proof you assume the opposite of what you intend to prove is true

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