All Triangles are Equilateral - Numberphile
https://www.youtube.com/watch?v=Yajonhixy4g
Publisher, Numberphile, Video, YouTube
A proof that all triangles are equilateral - can you see a problem with it?
From the Reddit discussion, here is a demonstration of the problem in GeoGebra.
9 November 2014 Edit: 27 February 2021
- Topics:
- Space and Geometry, Triangles
- Content Type:
- Publisher, Numberphile, Video, YouTube
- The Australian Curriculum
- Measurement and Geometry, Geometric reasoning, ACMMG243 Year 10 Formulate proofs involving congruent triangles and angle properties
- The Australian Curriculum Version 9.0 New
- Year 10, Space Year 10, AC9M10SP01 apply deductive reasoning to proofs involving shapes in the plane and use theorems to sol
- NSW Mathematics K-10 Syllabus
- Measurement and Geometry, MA4-18MG Angle Relationships
- NSW Curriculum New
- Measurement and space, Angle relationships, MA4-ANG-C-01 Angle relationships
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