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Cut-The-Knot-Action 11!
Author:
Tim Brzezinski
Topic:
Equilateral Triangles
Creation of this applet was inspired by a
tweet
from
Alexander Bogomolny
.
How can you formally prove what this applet informally illustrates?
GeoGebra
Quick (Silent) Demo
New Resources
Ellipse as Envelope - Correspondence Method
Rotating Points (Optical Illusion)
Play C3 E3 G3 C4_C4
Introduction
Stairs (Optical Illusion)
Discover Resources
Lines and rays
Euler Line Construction
Plotting a gradient function
Copia lui Pravilna trostrana prizma
Comparing Normal and Binomial Distributions
Discover Topics
Cube
Tree Diagrams
Vectors 2D (Two-Dimensional)
Integral Calculus
Similarity Transformation or Similarity