indirect proof

noun

an argument for a proposition that shows its negation to be incompatible with a previously accepted or established premise.

QUIZZES

ELEMENTARY SCHOOL PUNCTUATION QUIZ

Punctuation marks help make writing easy to read and understand. Some of the most important ones are the period (.), comma (,), question mark (?), and exclamation point (!). How well do you know how to use them? Find out in this quiz!

Question 1 of 10

Which punctuation mark is best for this sentence? "Can I watch a movie __"

comma (,)

period (.)

question mark (?)

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British Dictionary definitions for indirect proof

indirect proof

noun

logic maths proof of a conclusion by showing its negation to be self-contradictory; reductio ad absurdumCompare direct (def. 17)

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