One-Question Math Exams: Geometry
A one-question geometry exam: assume the parallel postulate is false and prove as many new theorems as you can.
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Free for classrooms, worksheets, slides and other non-commercial use under CC BY-NC 4.0, with credit to Ben Orlin.
Cartoon by Ben Orlin, Math with Bad Drawings. https://cartoons.mathwithbaddrawings.com/2016-08-31-one-question-math-exams--geometry/ (CC BY-NC 4.0)Transcript
Geometry: "Assume the parallel line postulate is false. Prove as many new theorems as you can."