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Category: Mathematics

GeoGebra app Feb 2024

  • khoitsma
  • General, Kids (middle school and up), Mathematics
  • 0 Comments


Screenshot

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Reflection on Billiards and Math Feb 2024

  • khoitsma
  • General, Kids (middle school and up), Mathematics
  • 0 Comments

This inscribed triangle is a periodic billiard trajectory called the Fagnano orbit, named for Giovanni Fagnano, who in 1775 showed that this triangle has the smallest perimeter of all inscribed triangles.

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What is the Day of the Week? Jan 2024

  • khoitsma
  • General, Kids (middle school and up), Mathematics, Mental Math
  • 0 Comments


odd months

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Hand Calculated Truss vs RISA Dec 2023

  • khoitsma
  • Calculus, Computer Algebra, Engineering, Jupyter, Mathematics, Plotly, Python, RISA-3D, Sympy
  • hand calculated, RISA, truss
  • 0 Comments

truss diagram

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Kolam Muggu Rangoli Dec 2023

  • khoitsma
  • Calculus, General, Mathematics, Science
  • 0 Comments

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Wolfram — Writings Dec 2023

  • khoitsma
  • Calculus, General, Mathematics, Science
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‘The Concept of the Ruliad’
‘Expression Evaluation and Fundamental Physics’

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What is the most general equation for the area of a triangle?
The Wait calculation
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IOP counterargument
The amazing arbelos
Surprises found in the arbelos (1954)
Arbelos from Wolfram MathWorld
Circle Theorems
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Two Semicircles
Japanese temple geometry
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Pentagonal number visual proof