GeoGebra
GeoGebra
  • Home
  • News Feed
  • Resources
  • Profile
  • People
  • Classroom
  • App Downloads
About GeoGebra
Contact us: office@geogebra.org
Terms of Service – Privacy – License

© 2023 GeoGebra

The Cyclic Rectangle

Author:
John Golden
Topic:
Quadrilaterals, Rectangle
Futility Closet had this striking theorem they called the Japanese Theorem for cyclic quadrilaterals. Had to make this illustration. https://www.futilitycloset.com/2018/11/08/a-hidden-door/ What questions (besides how to prove it) does this raise for you?

New Resources

  • SSS Similarity Theorem: Exploration
  • Linear Function to Bowl or Cup
  • Dilations Part 2: What Do You Notice?
  • GeoGebra Math Resources Preview 2023/24
  • Graphing Sinusoidial Functions (All Transformations)

Discover Resources

  • transformations
  • Koeficijenti linearne funkcije y=ax+b
  • math project 1
  • Project Fractions
  • Subtraction 2 digit

Discover Topics

  • Arithmetic Mean
  • Similar Triangles
  • Cuboid
  • Polynomial Functions
  • Kite

GeoGebra

  • About
  • Partners
  • GeoGebra on Tests
  • News Feed
  • App Downloads

Apps

  • Calculator Suite
  • Graphing Calculator
  • 3D Calculator
  • CAS Calculator
  • Scientific Calculator

Resources

  • Classroom Resources
  • Learn GeoGebra
  • Classroom
  • Geometry
  • Notes
  • Terms of Service Privacy License
  • Facebook Twitter YouTube