Mathematics A-Level

circular reasoning

What circular reasoning means in Mathematics A-Level, as defined for WJEC.

Definition of circular reasoning

Check what you remember

Read the wording for your board, then hide it and explain circular reasoning in your own words. Rough notes are fine. This is a self-check, with no mark or grade.

Reference: WJEC

Assuming the identity one seeks to prove, which invalidates a geometric or trigonometric proof.

WJEC · Overarching themes - Mathematical argument, language and proof (study guide)

Topics that use circular reasoning

Overarching themes - Mathematical argument, language and proof (WJEC A-Level)

Related terms

Using circular reasoning in the exam

Check the command word and mark scheme for your exact question. After comparing your explanation with the reference, use the term in an answer on the linked topic. This practice does not predict an exam mark.

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