Tag
#Proofs
2 posts
A proof is a complete argument, not a demonstration on an example. Articles under this tag deal with constructing them: what counts as justification, why the diagram is evidence rather than proof, how to structure a congruence or similarity argument, and what a marker is looking for when partial credit is on the table.
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Understanding the Pythagorean Theorem: A Step-by-Step Guide
What a² + b² = c² actually says, why it holds, how to apply it step by step, where students slip, and the extensions that follow from it.
by Geometry Contest -
10 Common Mistakes in Geometry and How to Avoid Them
Assuming the diagram is to scale, mixing up perimeter and area, misapplying congruence — ten geometry errors, and the habit that prevents each one.
by Geometry Contest
